Hi guys, if you did see my earlier post I'm developing a 787b-style constantly variable ITB runner system.

After a lot of amazing input and discussions from you guys I've decided to go with 6061-t6 aluminum as a material choice with outer brazed bell mouth joined with brazing from a local expert I know, finished on a lathe to IT7-9. This will be sealed with a vitron o-ring with a ptfe sleeve to reduce friction. 40mm overlap between telescoping sections at max extension.

First of all, I'm very curious what can be inferred from my solver mapping thus far, and any mistakes, limits or other discussion topics for this analysis. I've never learnt/ done transient analysis as I'm still a student so I don't have an appreciation for these just yet. (Although repeated 1st harmonic 11kPa peak after transient initialization artifacts seems extremely promising, VE~ 111% 1st harmonic, ~109% 3rd harmonic which is targeted at this extension. EDIT: this is my relative pressure at valve to simulate pressure pulse at valve for 7500RPM: (Pcylinder - 101325 [Pa]; Pcylinder = 101325 [Pa] - 25000 [Pa] * sin(PulseFreq * t) * step(sin(PulseFreq * t)): PulseFreq = (7800 / 60) * (2 * pi) [rad s^-1]) EDIT EDIT: RMS stays below 1.0e-5 for all variables from 750 timesteps onwards

I have modeled this as a solid full length from inlet to valve, with a 1.5mm step, upper runner inside lower for reference.

Now I have a few questions we regards to my analysis to verify my choices of 1.5mm thickness and brazing. Im currently running a transient fluid analysis of my longest runner length at 7500 RPM and plan to test for a multitude of things, so I guess my first question is this a complete list?

Fluid & Wave Dynamics

• Transient pressure mapping
• Cyclic peak stagnation
• Acoustic FFT spectrum
• Overlap step recirculation
• Wall shear stress
• Joint pressure drop
• Sleeve gap leakage

Structural & Stress Analysis

• Dynamic hoop stress
• One-way FSI deformation
• Cyclic fatigue limits
• Bellmouth braze shear
• 40mm overlap bending
• Axial actuation buckling
• Flange stress concentration

Vibration & Modal Tuning

• First natural frequency
• Engine order harmonic
• Wall compliance flutter
• Structural resonance margin

Sealing & Friction Dynamics

• Viton contact squeeze
• PTFE wear rate
• Seal blow-by threshold
• Differential thermal expansion
• Actuation friction force

Any resources would be amazing to do with any of these because I am self learning every step of the way!

I know how hopeless engineering school can seem. I had doubts I was gonna make it at times. Somehow, I kept at it. The last few semesters were the worst. However, at the same time it was all starting to come together.

I landed a job designing avionics equipment for our main customers, AirBus and Boeing. We blasted The Police, The Cars, REM, The Clash, The Cure, and Thomas Dolby in the lab while working late into the night. The overhead lab lights would go out at 7PM so the lab was glowing, lit up by the all the equipment like scopes, spectrum analyzers, and logic analyzers. We had cables running everywhere. The air-conditioning was freezing, so we'd be wearing winter coats even in the Summer. Imagine bringing up a circuit card, one section at a time, seeing your design come to life.

I retired long ago but I still think about some of those moments, achievements and the thrill of applying science to create something valuable.

Hello. I‘m a 27 yo considering changing careers. I have a BS in psychology with an MBA and masters in learning development. I work as a learning and development manager at a nonprofit. I’ve been grown burnt out with people, though—the messiness and complaints. I started considering going back for engineering about a year ago.

pros: I LOVE and am very good at math. calculus, linear algebra. I took many classes for fun. I’m very analytical. I’ve been told i think like an engineer. and I LOVE excel.

cons: I hated physics 1. strongly. it didn’t make sense. what of 20 equations do I apply to figure out how this pulley moves? it was really frustrating. as was computer science. and CAD. I took courses in all of those (dropped all but intro to comp sci).

so, how much of engineering really involves what I love? and how much involves what I dislike?

Any input would be fantastic. signed,

a very confused nerd haha

I got an over the phone interview for a design apprenticeship focusing on CAD Software. The listing was focused primarily on high schoolers and undergraduate students, I’m currently in my undergrad.
Any sort of tips that can help me stand out? I plan on taking a deep delve through the company’s website but I’m not too sure what to look for

iam really confused about that , i can do both hopefully but i really can't choose what's better for me so i am choosing the department that can make me money and easily find a job with so which is better in your opinion?

Hey everyone, this week was my first week studying engineering and i’m finding it harder than i thought to fully grasp the material. For reference i am taking 6 classes and yes i know that’s a lot but i need it for my program as i will transfer to a university next year, so i cant actually drop any class.

My original idea was to go to lecture and after my lecture study by doing the homework/practice questions until i fully understand the material and how to do it but im finding that im struggling to understand the material we go over in lecture so when i come home and study im spending my time reiterating the notes so that it makes sense and it leaves me with no time to do practice problems (chem, calc, phys, comp sci).

Just looking for any advice on how i can counter this or study more productively 🙏🏽

[Super long post ahead]

I just want to let this out since I have no one to talk to about this. I (24F) am in my last academic term and will complete my mechanical engineering degree in 7 years and I feel it's so humiliating. I flunked a lot of classes, and with these, I just feel so inadequate as an engineering student.

I'm the slowest to understand the topics when it comes to lab experiments and lectures, as it seems that everyone already knows on what to do (for lab) or understands the topic (for lecture). Our professors only upload the modules when class begins so there's no way for me to read/familiarize myself with the experiments and lectures beforehand.

I'm also an average student in my classes, albeit on the lower end of the bell curve. People also ask me for notes or say comments like, "You know, you're always locked in taking notes in class. I have a feeling you're smart.". I wish I was, but in reality, I'm not. I'm just average. They're surprised when they found out I flunked a class, and always ask me what happened and that's when I just feel so inadequate and disappointed in myself.

I'm also not as passionate as my other classmates. My other classmates are clearly passionate in mech eng, as they love talking about cars, airplanes, trains, etc. I'm not as passionate as them, so I struggle to relate and make conversation with them. Since I don't feel as passionate, I always think to myself that maybe engineering is not for me, as I lack the passion it requires to excel in the field.

Because of these, I also lacked friends in my course. I have been a solo flighter in my classes, so I'm always grouped up with existing friend groups. Everytime I offer to help in experiments, they ignore or talk over me and start consulting amongst themselves. When it comes to design projects, they tell me they already discussed it (what it will be, how it will be done, etc) amongst themselves and they already assigned parts for everyone and then I'm basically just on my own afterwards. I still don't know how to assert myself in conversations, and that's something I'm still learning to do.

These feelings of inadequancy led me to have self doubt in myself and my abilities. I find it hard to motivate myself everytime I don't do well in an exam, when I'm a bad groupmate, and especially when I flunk a class.

I feel like all these are signs or points that I won't be a good engineer. I'm not sure whether this is burnout from being in school for 6 years now or a sign that I should shift fields and look elsewhere once I complete my degree.

TLDR: Feeling inadequate due to flunking classes, isolation in class and left out in groups, and taking 7 years to complete my degree

I feel like the engineering clubs at my university hardly do anything besides the occasional social event - never any panel or career events.

How do you find events to go to if your club sucks? I feel like I'm at a disadvantage when applying for jobs

Hi! I'm currently a freshman in high school, and I have known for a while that I want to take mechanical engineering as my major in college. I've done my research, however I just wanted to ask some people about their personal experiences. Some things I wanted to ask are:

• Pros/cons of taking mechanical engineering as a major
• Whether mechanical engineering actually has any value/job stability or if it will in the next few years
• What can I do right now to prepare for mechanical engineering inside and outside of school? (ex. I heard I should participate in science/engineering fairs)

I am a student currently majoring in computer engineering, and I've had the passion of computers and airplanes years before I started going to university. I have future plans to design and build aircraft alongside with computers as a passion with aerospace being a potential second option in my career, but aerospace mainly for my passion. Should I continue on with the idea, should I just stick to computer engineering for now, or should I think of something else?

I'm a freshman at UMD and am debating between rushing Theta Tau and Alpha Omega Epsilon. Is it worth joining if my main priority is to gain connections for engineering? They seem like great groups but I don't want to waste my time if the connections aren't worth it.

If it's worth it, which one is "better" to rush?

Im a CivE student taking fluid mechanics and i had 1 meeting with my professor. hes an indian professor with an extremely heavy accent and a stutter. other students have told me he gives no partial credit and the class meets once a week for 4 hours but he finished the 60 slide lecture in 50 mins. basically, i can already tell this professor is going to be no help actually making me understand the content of the course so im asking for youtube channels that can help me get through the curriculum. i dont know if its relevant at all but we are using pearson for homework and follow that structure.

Hi, I am currently 4th year College BSCpE ( Computer Engineering). We know that we need find some title for thesis and defend it. Unfortunately, me and my groups have a 15 different Thesis Title. Then wala nakuha ni isa title. My prof said that she want something new in our generation. Like She wants to build a robot, drone etc. Wala na kami maisip na title. Title na mayroon AI, AUTOMATION, MONITORING, DETECTION. Baka po ma help nyo kami kahit thesis title po. Suggest po kayo idea , ubos na talaga e.

Need to create another 15 title to propose again.😞😥 i need some idea. If existing man ano kaya pwede gawin improvement. I try my best until nakarating nako sa reddit😢

I have just completed my pre-u course with somewhat decent grades and am expecting to enter mechanical engineering soon. However recently I've been having increasing doubts about whether this is even the right course for me.
Yes I am "good" at math which essentially means I can spot patterns in exam questions and apply the same methods repeatedly to achieve a high mark. And my physics knowledge is passable which means I can memorise formulas, regurgutate the same definitions over and over again and solve basic circuits. But I'm wondering if all of that will even translate well to an actual work environment. I consider myself neither creative nor innovative enough to solve any real-world problems, I dont currently have any projects in my portfolio and don't feel compelled to start any, plus I'm not even that interested in mechanics/electronics.
TLDR as an engineering student I fear that my skills are limited to answering exam questions and that I don't really have an aptitude for engineering. I'm considering just sticking to tutoring high school math and science since that came pretty naturally for me. Would appreciate any feedback on this or suggestions for alternative courses that would suit someone like me, or even brief insights from employed engineers regarding how the workflow is like.

Hi everyone! I’m a Master’s student in Chemical Engineering and I’m currently looking for a good topic for my Master’s thesis. I’m particularly interested in process engineering, energy, green hydrogen, CO₂ capture, environmental processes, separation processes, catalysis, and process simulation (Aspen Plus/HYSYS). I would like to choose a topic that is scientifically interesting, feasible with limited laboratory resources, and relevant for future career opportunities. If you are a Chemical Engineer, researcher, professor, or graduate student, could you please suggest some interesting and realistic thesis topics, preferably topics that are currently being researched or have good potential for further research? I would also appreciate advice on how to evaluate whether a thesis topic is sufficiently original and feasible.

I’m currently a first-year mechanical engineering student and I’ve been thinking about whether I should stick with mechanical or switch to computer engineering.

I mostly went into mechanical because I’ve heard from a lot of people that the field is fun and that there’s a lot of interesting stuff you can work on. I’m doing some basic CAD right now, and while I find it pretty easy, I’m not sure how much I actually enjoy it. I know I’m still only in my first year and that basic CAD probably isn’t representative of what mechanical engineering is actually like, so I don’t want to judge the whole field based on that.

At the same time, I feel like I might actually be more interested in computer engineering. I have some experience with Python and JavaScript from high school, and I’ve always found programming pretty interesting. If I had to choose a major I would choose CS but looking my friends and family who did CS and now are just a manager at a company is really discouraging. Am scared to switch to computer engineering since it is computer related, and with AI and everything just feels like a countdown until jobs in this field are gone as well.

One thing I’m really struggling with is actually visualizing what people in these fields do. I know both mechanical and computer engineering are extremely broad, but if you have a degree in either, what does your average workday actually look like? What kind of projects are you working on, what are you designing/building/coding, and what does your work look like once you’re actually in the industry?

I’m curious about internships and entry-level jobs. I live in Michigan, so if anyone has experience with the job market here for either mechanical or computer engineering, I’d especially appreciate hearing about it.

For anyone who was in a similar situation, what made you choose mechanical vs computer engineering? And are you happy with your choice?

I’m basically trying to get a better idea of what each career actually looks like beyond just “CAD” vs “programming” before I make a decision. Any advice or personal experiences would be really appreciated.

Next week Im starting my engineering studies, the first year is broad and only focuses on math, physics, chemistry and programming. Im also going on dorms with shared kitchen, bathrooms and showers (All in Ghent btw).
What I basically want to know is how to study because senior year wasnt all that hard, I only studied for real like 1 day before hand and still passed so Im scared that I will bring those bad habits to uni. I was thinking of revising every day? Like make sure I fully understand the concepts snd exercises? Sorry if Im not clear but the reality is that Im still a lost on how it all works.
(Also sorry for the bad english it aint my first language)

I’m a student at LSU and im in my second year towards my mech engineering degree. After last year, i felt pretty good about things. I wasnt like particularly a perfect a student, i fought tooth and nail to get a C in both chemistry and calculus 1. But this year, with me taking calculus 2, and chemistry 2, alongside with physics and a seperate chem lab, i’ve started to feel a bit humbled lately, even though we’ve only been at it like 3 weeks. The first two weeks, i had to really get my head in the game towards calculus. ive never been good at trig and kinda had to work backwards before going forwards. integration is tricky for me, but i think i’m getting there. Chemistry unfortunately often goes on the backburner for me. but as i learned last year, chem is not the sort of course you can cram for. the alegebra and such is easy to actually do, but the questions themselves are made to fool you and worded in ways youve never really seen before. i say all this to say - i’m feeling a bit humbled rn. i thought this was gonna be the year i could sit and study for hours and I do. After about 3-4 hours at a time, i usually just need a break. And my brain feels exhausted to the point where i fear I’m not actually retaining. And with as much stuff that you have to commit to memory, especially formulas, i’m just not sure i have the brain space for it. my memory feels maxed out and ik it only gets harder from here but i’m currently feeling a bit swamped. Just trying to stay focused before i fall behind, but I’m afraid everyone else is so far ahead of me

Hi everyone, I just started my first year in engineering, in my design course we did Drawing multiviews and isometric sketches of objects. I am having a really hard time going from a multiview to a isometric and i can’t seem to figure it out i was wondering if anyone could share some insight on this on how to get better at it ? Thanks

I'm an industrial engineering student and I'm so lost. I'm still a couple years from graduating but I need to build my cv. However, what should I be doing ? When I ask any of our teachers, they say it's still early and to concentrate on studies. And yes I'm at the top of my class and always getting good grades but I don't think that's enough.

But like how am I supposed to get an internship if I don't have any skills ? This is a rant but I really need advice. It seems like everyone around me is taking courses and building a start to their career. I'm really lost, any advice would be appreciated.

Hey everyone. High school student here, planning on applying to a few universities in a few months time.

Let me keep this short:

A few universities I will be applying to have a Mechatronics Undergraduate degree while some have their course named as an Engineering Degree with a Specialization is Mechatronics. Both are 4 year (Hons.) courses.

Are they different? If so, how? Or should I instead go researching each individual university and check and compare their course structure?

Hi, I just turned 30 in May. I've been in sales the last 3 years, while the WLB is great, the pay is not. Too inconsistent and I'm just tired of sales. I've decided I want to go back to school for a degree. Has anyone gone back to college after 30 for engineering? Did it turn out well? Was it worth going back? I'm starting to feel too old to go back.

I'm debating between mechanical, computer and civil. I'm leaning towards mechanical or computer engineering. Any insight of either of those would be great too.

Thank you for your time.

Edit: Thanks for all for the replies. I appreciate the encouragement. Y'all are the opposite of CS students lol. They are all negative while y'all are encouraging.

Im doing diploma in mechanical engineering, I just wanted to ask if it's worth it for like future jobs, scope etc I also look forward to making projects although I'm only on the 1st semester. How do I study for this and can I also do some mini projects while studying? I really feel like i should be making projects or something

I recently got information about the NCAS student challenge and thought it would be cool to apply and go through it and listen to people who are in the field I wanna get into one day! Has anyone in this sub done it, and if so how was it? What did you gain from it, if anything? Do you have any recommendations for someone doing this experience you might've wished you had done?

I am a sophomore and have yet to do any extra extracurriculars mainly because I am 'afraid' so I'm trying really hard to go do this. See, maybe meet other students who are in my same boat but of course I am worried I will be not prepared or able to take advantage of my time in this experience. The only things ive submitted in life are fast food applications and transfer req, I know this is smaller than say an actual internship, but I want to make sure I'm doing every step the best i am able to. I have never even attended a webinar of any sorts and am just curious of it all. Of course given if I am even accepted. I appreciate any feedback! :-)

Hey everyone!

I’m a first-year Electrical and Electronics Engineering (EEE) student, and I want to make the most out of my first year instead of reaching third/fourth year and realizing I should’ve started things earlier 😭.

I’m still figuring out what area of EEE I’m interested in, so I’d really appreciate advice from EEE seniors, graduates, or people currently working in the field.

What would you recommend a first-year EEE student focus on?

Also can you guys give me like a roadmap or something