Question by Student #201227127 professor, I wonder about question 1 of assignment 6. to solve it, I checked Reynolds number to know flow is laminar or turbulent. so I found Re>$5X10^5$, it is turbulent flow. in class, you talked laminar flow means same as steady-state. but in problem, find wall temperature in steady-state. but this flow is turbulent. so I wonder in steady-state, can turbulent flow appear?
 Question by Student #201227153 Dear professor, I haver question about laminar and turbulent flow. The criteria Reynold's number is $Re_{x cret}=5*10^5$. If $Re_{x}<5*10^5$, the flow is laminar. Also, if $5*10^5  05.17.17 In this course, the flow is considered fully turbulent at a location where the Reynolds number is larger than$5\times 10^5$. The flow is considered “mixed” if integrating both the laminar and the turbulent regions. 1.5 point bonus.  Question by Student #201227127 professor, in A6 Q1, I found$Re_L=1.45x10^7$. To find$T_w$, we need to find h. flow is mixed with laminar & turbulent, so in table, I choose "laminar-Turbulent average" but the restrictions are$T_w = const, Re_L <10^7$in both 2 options. so I don't know what I choose ? Well then you can not use these correlations. So you need to find another way..  Question by Student #201427132 I have some questions about previous the lecture at 5/11. While you give an example, you missed the assumptions and let assumptions as blank. So, i try to fill it out and here's my idea. : 1. Steady-state flow 2. Plate should be flat and thin plate 3.$\rho$, c, k are constant 4.$E_c$<<$\frac{1}{Pr}$I wonder whether my guess is right or wrong.  05.18.17 Hm, that lecture was more than one week ago.. I forget what that problem was. You should explain this in your question.  05.19.17 Question by Student #201427132 I rewrite my question with picture. The example wanted whether flow is turbulence or laminar at x = 1m. While you give this example, you missed the assumptions and let assumptions as blank. So, i try to fill it out and here's my idea. : 1. Steady-state flow 2. Plate should be flat and thin plate 3.ρρ, c, k are constant 4. EcEc<<1Pr I wonder whether my guess is right or wrong. This time, the typesetting is hard to read. Please rewrite the question with proper typesetting and I'll answer it.  Previous 1 ... 21 , 22 , 23 ... 27 Next • Make PDF $\pi\$