TrueFalse questions 15 Increasing underrelaxation number can

True/False questions (1-5): Increasing under-relaxation number can speed up convergence. Verification is the same as validation. The purpose of mesh convergence study is to reduce solution error by refining mesh. Explicit method requires more computational time at each time step than implicit method does. SIMPLE algorithm provides a coupling between the velocity field and the pressure field.

Solution

1.TRUE(if relaxation factors are reduced, then it takes huge time to reach the convergence.)

2.FALSE(http://www.softwaretestinghelp.com/what-is-verification-and-validation/)..FOLLOW THIS LINK TO SOLVE THE ISSUE

3.TRUE(MESHING MEANS DIVIDING WHICH GIVES ACCURAYE RESULTS)

4.FALSE(EXAMPLE:EULER FORWARD(EXPLICIT) TAKES LESS TIME THAN EULER BACKWARD

5.TRUE.The SIMPLE algorithm can be developed for non-staggered, unstructured meshes.