QUIZ 7 – Report

 Many students were not able to simplify the cylindrical Navier Stokes equations with correct assumptions.  Some students who did simplify Navier Stokes were not able to solve

o By setting the model Reynolds number equal to the prototype Reynolds number, for fully dynamic similarity, the ratio of velocities is found and used when setting the model

 Nine students did not set the Reynolds number to 2000 in order to solve for the height of the water level in part c where the flow starts

 5 Students were setting the first location for the Energy equation at the top of the pipe at the bottom of the tank, this is incorrect because the pressure is not know at

 Only recurring error was identifying the correct Reynolds transition number for flow over a flat plate. o Reynolds number for flat plate external turbulent

 One recurring error was students were not using the correct table for.  Another recurring error was students were not using the plat

 Many students did not apply the proper boundary condition to solve for constant

 Some students used wrong units on speed of sound in air, units did not cancel correctly for Mach