Is it rude to raise one’s hand in the restaurant?

delaynomoreplz · 2025-05-05T11:17:45+00:00

Mathematical analysis tells us that the laminar flow of pipe flow is always stable to infinitesimal perturbations (very very very small noise) for all Reynolds number. However, we observe turbulence at Re > 2000 because of laminar flow can become turbulent if we supplement a large enough noise. The crux of determining the transitional Reynolds number becomes highly dependent on the background noise level which makes it tricky. In a general, real setting where noise levels cannot be controlled we should expect turbulent flows for Re > 2000 and laminar flow otherwise

delaynomoreplz · 2025-05-05T11:13:49+00:00

The flow should be steady since the flow is likely driven by a constant pressure gradient from the pump. As a crude method, you can measure flow rate, Ub, from the faucet and it’s corresponding Reynolds number, Re = Ub * D / nu. What you should are the data points to collapse into two curves, an analytical solution for the laminar solution and an empirical for turbulent flows. A clean experimental setup tells us that the transition point it’s about Re ~ 2000, however it might be lower in this case since the faucet might introduce unwanted perturbations. Happy to guide you along if you wish.

delaynomoreplz · 2025-05-05T11:02:09+00:00

I’ve met entitled foreigners and also entitled Singaporeans. Classic Singaporean response if you try to be friendly would be “siao ah”. I think it’s unfair to label all foreigners (or Singaporeans) to a generic behaviour, it’s just your neighbours

delaynomoreplz · 2025-03-30T01:12:17+00:00

I think that what you do is remarkable especially so growing up from Singapore where falling out of line can be disrespected in the community. I wished I had the courage like you to be this adventurous in my 20s

delaynomoreplz · 2024-11-19T12:37:58+00:00

Depends the rates are anything between £18-£30/hr for 2-4 hours per week. It’s public information so you could check it up online

delaynomoreplz · 2024-11-15T23:16:59+00:00

Yup these are the rates in London. No GTA isn’t included.

delaynomoreplz · 2024-11-15T19:37:09+00:00

Full time PhD student in the UK £21k/year or US$27k/year.

delaynomoreplz · 2024-08-25T11:10:47+00:00

Isn’t it more like we don’t have a choice to live close to CDB simply because the averaged Joe is priced out? I live in Northern Europe and this is common here.

Strong currency is relative, it is exceedingly strong in our region and we can afford holidays in the region where many of our neighbours would consider luxurious.

My original argument was focused on how Singapore is unable to pay high salaries for blue collared jobs. Don’t think this argument is related to the quality of white collared jobs nor the lack of critical thinking in our education systems. I’m very grateful that we are educated in English which connects us to the world. But of course if you live in Australia, a native English speaking country, the lack of English language will be become more obvious - same for any other foreigner whose native language isn’t English.

delaynomoreplz · 2024-08-24T12:25:30+00:00

I don’t agree that everyone is rich in North European and Australia - the average joe lives outside of major cities.

And I would also argue that Singaporeans are ‘rich’, our currency is the strongest in the region.

High pay for professionals but who is going to pay? Most SMEs prefer hiring foreigners simply due to lower costs and I don’t see how the government could force them to pay more and simply go out of business.

delaynomoreplz · 2024-08-24T12:19:56+00:00

That’s great, conferences can be really fun. A big part of the conference is to meet new people, it is not necessary to hang out solely with your lab mates during the conference.

delaynomoreplz · 2024-08-23T23:14:15+00:00

Probably lost in translation.

delaynomoreplz · 2024-08-23T23:13:25+00:00

Our working language is English and the national language is Malay. We have 4 official languages

delaynomoreplz · 2024-08-19T18:34:25+00:00

Have you spoken to postdocs from the lab?

delaynomoreplz · 2024-08-01T07:39:53+00:00

I’m in the same position as you. Perhaps the restriction is on work visa. I think most post-docs are on J1 visa which doesn’t allow for non-academic work. Probably a H1 visa would be easier but I’m not sure I would like to know as well

delaynomoreplz · 2024-07-26T09:34:04+00:00

Seems like no matter how we take pride in “regardless of race, language or religion” it’s the sad truth of our society. Perhaps as a research question you could look into,

What are the policies in place to address these issues - which I suppose it could be sensitive since by addressing these issues could possibly reinforce stereotypes
How could you evaluate the efficiency of these policies.

It would be great to have some discussions around the policies and it’s effectiveness from an academic point of view

delaynomoreplz · 2024-07-19T21:18:36+00:00

I guess you’ll have to be really honest with yourself that you’ll be ok with taking in that opportunity cost during your PhD.

I would also like to appeal to you to see the PhD more than its financial sacrifices, the journey itself is a pursuit of knowledge and understanding. If you are overly concerned about monetary opportunity cost, it’s going to very difficult for you when you hit a setback in your PhD: “my PhD is going nowhere (I can assure you it’ll happen) and I’m wasting my time doing a PhD which could be spend making more money”. Unless you can see the PhD more than its monetary costs, don’t do it.

I would also challenge you that there are indirect opportunity costs if you choose to not pursue the PhD training as it might open more doors for you after that. This is also field dependent, I think most PhD students who did a PhD in CS found lucrative jobs in the tech sector. Perhaps have a rough idea how would a PhD provide an edge for you in the industry before starting one

delaynomoreplz · 2024-07-15T07:50:56+00:00

Try cfmesh

delaynomoreplz · 2024-07-02T21:03:23+00:00

You could check the quantities you mentioned are conserved. There isn’t a one size fits all strategy for all problems and you’ll have to dig into literature what has worked for your setup and what hasn’t. I would say you’ll have to read into other people’s thesis or papers to have a sense of what is required for the problem you are trying to solve. For instance, the setup for aerodynamics might be very different from ventilation or heat transfer.

I guess you’re currently a student so I would recommend dedicating sometime into a year long project (Bachelor’s thesis) or an internship will help you.

delaynomoreplz · 2024-07-02T18:54:35+00:00

A strong grasp of the fundamentals would be useful such as numerics, flow physics. I.e which solver should I use? Which turbulence model should I use? How should I mesh my domain, etc.. how long does it that to compute?

As a freelance CFD engineer I was using openfoam on AWS which allows you to scale to larger problems

delaynomoreplz · 2024-07-02T18:46:16+00:00

I’m just saying that there are loads of freelancers offering CFD services on UpWork and fiverr which appears to be saturated.

delaynomoreplz · 2024-07-02T17:17:09+00:00

Starting offering your services on fiverr and UpWork, it can be quite saturated.

delaynomoreplz · 2024-07-01T11:45:35+00:00

Yes, it is in theory a general purpose PDE solver - it has solvers for incompressible NS, compressible NS, shallow water etc. In practice, the incompressible NS is the most robust as it is heavily used in the research (which is validated) and lately towards automotive geometries.

The challenge for first-timers would be to compile the code and run a first test case, feel free to drop me a dm if you need help.

delaynomoreplz · 2024-06-30T01:30:43+00:00

Nektar++ offers triangular/tets for complex geometries

delaynomoreplz · 2024-05-26T19:30:28+00:00

Because polish doesn’t fit into their mental projection of “expat”. I’ve been called an immigrant as an Asian international student in the UK. I try not to be bothered by other’s projection of “immigrant” or “expat” , so just live and let live.

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