In a CFD simulation the choice of 2nd order spatial resoluti

In a CFD simulation, the choice of 2^nd order spatial resolution, rather than 1^st order, leads to increased spatial resolution/accuracy and decreased speed of numerical convergence. These effects are attributed to less artificial Explain why Jaray\'s innovative automobile shapes of the 1930s produced a relatively large level of drag despite minimizing flow separation along the rear end?

Solution

Jaray are heavily influenced by the streamlining of the vehicle. He worked out formula for automotive aerodynamic design principles which was later used by many leading car manufacturers like Mercedes, Opel , Maybach etc. By streamlining the vehicle the drag coefficient of the vehicle was reduced to a very small value as much as Cd = 0.15 theoretical , Cd = 0.28 practical. But drag of the vehicle does not depends on value of drag coefficient only but other featues as well like the frontal area of the vehicle. Increased frontal area of the vehicle resulted in more drag inspite of have lower drag coefficient.