Viscous Flow Questions & Answers  


I know, the PIP system in this case forces me to give you a B+ instead of a A+ and this is of course not fair. The difference between A+ and B+ is a big one.. I talked to the secretaries about it today but they seemed adamant nothing could be done. However, I'll write a very polite letter to the PNU admin tomorrow explaining the situation, and maybe they will accept making a change (the last day this can be done is January 3rd). I'll keep you posted. If this is not possible, then I can give you a higher grade in my other courses — for example, if you get B+ in my Heat Transfer class next year, I'll upgrade it to A+.




This is a good question. The conservative form is not necessary to solve most viscous flow problems in this course, so I prefer to derive only the nonconservative form. In other courses (like Intro to CFD for instance), then we need the conservative form because it's easier to discretize.




I fixed the mistakes, thank you for pointing these out. It must have been quite late when I wrote this. As for Assign. 4, let's look into this again when we get there. Don't go too fast ;)




Expand the terms $\partial \rho v/\partial t$ as $\rho \partial v/\partial t+...$ and $\partial \rho v^2/\partial y$ as $ \rho v \partial v/\partial y+...$ and so on. Then regroup terms so that the mass conservation equation appears and set those terms to zero.





$\pi$ 