User Paul

21 votes

8 answers

3k views

How do engineers really use numerical simulation?

asked Jan 24, 2015 at 5:36

16 votes

3 answers

8k views

What is the most efficient means of warming a building with a high ceiling?

asked Jan 23, 2015 at 18:05

14 votes

3 answers

55k views

How to determine the characteristic length in reynolds number calculations in general?

asked Oct 9, 2015 at 22:26

14 votes

1 answer

15k views

Why is Mach 0.3 the threshold separating compressible and incompressible flow?

asked Feb 9, 2016 at 16:13

13 votes

3 answers

10k views

How different are dc motor designs from dc generator designs?

asked Jan 24, 2015 at 21:51

10 votes

2 answers

4k views

Do structural engineers carry insurance for catastrophic errors?

asked Feb 12, 2015 at 20:42

9 votes

1 answer

315 views

Sensors / processing algorithms to emulate a human's sense of smell

asked Apr 3, 2015 at 17:39

8 votes

1 answer

364 views

How do I select an appropriate turbulence model?

asked Oct 14, 2015 at 18:34

7 votes

3 answers

4k views

What do the zeros of the transfer function tell you about a system?

asked Dec 1, 2015 at 21:50

6 votes

2 answers

8k views

Is inviscid flow necessarily turbulent?

asked Oct 7, 2015 at 22:32

6 votes

2 answers

236 views

When is DC power generation superior over AC power generation?

asked Jan 26, 2015 at 3:36

6 votes

4 answers

1k views

Can all electromagnetic spectra be focused like a laser?

asked May 31, 2015 at 19:05

6 votes

4 answers

830 views

Why do we prefer resistance over conductivity in describing Ohm's law?

asked Jun 15, 2015 at 15:51

6 votes

1 answer

3k views

Why use steam in the rankine cycle?

asked Sep 5, 2015 at 0:53

6 votes

1 answer

3k views

Deriving the turbulent kinetic energy equation

asked Apr 4, 2016 at 22:05

5 votes

1 answer

544 views

How to measure turbulence parameters experimentally?

asked Jul 23, 2016 at 21:16

4 votes

0 answers

466 views

How should I set the turbulent prandtl number in a turbulent compressible flow simulation?

asked Apr 15, 2016 at 21:38

4 votes

2 answers

738 views

Should I expect fluid velocity within a pipe to increase beyond the inlet velocity?

asked Jul 11, 2016 at 20:15

4 votes

1 answer

2k views

Why do we need to condense steam in the rankine cycle?

asked Sep 5, 2015 at 1:11

4 votes

1 answer

602 views

Is there a theoretical bound to how tall a structure can be built?

asked Mar 5, 2015 at 18:31

4 votes

1 answer

871 views

Estimating the time required to heat a rod by a certain $\Delta T$

asked Nov 13, 2015 at 16:40

3 votes

2 answers

193 views

What system of pde's models ice melt flow?

asked Jan 4, 2016 at 17:00

3 votes

1 answer

208 views

How to control suction strength on a breast pump?

asked Apr 10, 2015 at 2:48

2 votes

1 answer

2k views

Why use different specific heat capacities in the energy equations for incompressible and compressible fluid flow?

asked Feb 17, 2016 at 16:25

2 votes

0 answers

263 views

Obtaining the correct flat plate turbulent boundary layer thickness in a CFD simulation

asked Oct 3, 2016 at 15:28

2 votes

1 answer

374 views

How to measure calories actually burned from exercise?

asked Dec 16, 2016 at 23:47

2 votes

1 answer

125 views

Can I neglect kinetic energy when modeling convective heat transfer for viscous, low mach airflow? Why or why not?

asked Dec 26, 2016 at 15:16

1 vote

4 answers

992 views

How to measure the pressure inside a bottle rocket?

asked Aug 14, 2017 at 17:02

1 vote

2 answers

5k views

How can I calculate the buoyant force on an object without knowing in advance the amount of water displaced?

asked Mar 27, 2018 at 17:24

1 vote

1 answer

163 views

Can isotropic materials become anisotropic under elastic deformation?

asked Nov 2, 2018 at 21:35

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31 Questions

How do engineers really use numerical simulation?

What is the most efficient means of warming a building with a high ceiling?

How to determine the characteristic length in reynolds number calculations in general?

Why is Mach 0.3 the threshold separating compressible and incompressible flow?

How different are dc motor designs from dc generator designs?

Do structural engineers carry insurance for catastrophic errors?

Sensors / processing algorithms to emulate a human's sense of smell

How do I select an appropriate turbulence model?

What do the zeros of the transfer function tell you about a system?

Is inviscid flow necessarily turbulent?

When is DC power generation superior over AC power generation?

Can all electromagnetic spectra be focused like a laser?

Why do we prefer resistance over conductivity in describing Ohm's law?

Why use steam in the rankine cycle?

Deriving the turbulent kinetic energy equation

How to measure turbulence parameters experimentally?

How should I set the turbulent prandtl number in a turbulent compressible flow simulation?

Should I expect fluid velocity within a pipe to increase beyond the inlet velocity?

Why do we need to condense steam in the rankine cycle?

Is there a theoretical bound to how tall a structure can be built?

Estimating the time required to heat a rod by a certain $\Delta T$

What system of pde's models ice melt flow?

How to control suction strength on a breast pump?

Why use different specific heat capacities in the energy equations for incompressible and compressible fluid flow?

Obtaining the correct flat plate turbulent boundary layer thickness in a CFD simulation

How to measure calories actually burned from exercise?

Can I neglect kinetic energy when modeling convective heat transfer for viscous, low mach airflow? Why or why not?

How to measure the pressure inside a bottle rocket?

How can I calculate the buoyant force on an object without knowing in advance the amount of water displaced?

Can isotropic materials become anisotropic under elastic deformation?