 ellipt cylind shear flow hyperbol veloc profil ellipt cylind shear flow hyperbol veloc profil stream function shear flow hyperbol veloc profil ellipt cylind determin infinit seri mathieu function stagnat streamlin flow displac region higher veloc displac increas main stream 2 stream progress non-uniform 3 increas minor axi length major axi length remain invari case displac reach limit cylind move axi symmetri stream limit valu reach critic distanc axi symmetri decreas stream progress non-uniform distanc independ incid pressur coeffici result forc moment coeffici associ cylind investig numer flat plate type cylind 