Introduction to CFD Questions & Answers  




Hm no, if we set $\phi _{i+1/2} ^{} = \max(0, \min(1,2r _{i+1} ^{} ))$ then we should define $r_{i+1}^\equiv\frac{u_iu_{i+1}}{u_{i+1}u_{i+2}}$. However, because $r_i^\equiv\frac{u_iu_{i+1}}{u_{i+1}u_{i+2}}$ then we have to set $\phi _{i+1/2} ^{} = \max(0, \min(1,2r _{i} ^{} ))$. 1 point bonus.




I guess your concerns are due to the fact you are using an older version of tables.pdf.. The tables have changed slightly in the last few days. After downloading the latest version, if you still have some concerns, ask the question again below.




I don't recall this step. You need to put your question into context so I can recall why we did this.




I don't understand. What other value would you give it?



$\pi$ 