FTP, name this scientist whose dimensionless parameter is defined by kinematic viscosity over thermal diffusivity.
This man asked his former professor August Foppl if he could marry one of Foppl's daughters, and since he failed to specify which daughter he wanted Foppl's wife decided that this man would get the older one.  Along with Glaubert, he created a rule for subsonic flow of air under compression which now shares his name, and he also worked with Lanchester to develop a theory of airflow over wings.  He also discovered the boundary layer for bodies moving through a fluid and introduced the soap-film analogy for torsion force.  Although he is responsible for popularizing the use of the Reynolds number, he also created his own value which can be used to predict anything from rolls at a low value, to cell-free turbulent convection at a high value.  FTP, name this scientist whose dimensionless parameter is defined by kinematic viscosity over thermal diffusivity.
This man asked his former professor August Foppl if he could marry one of Foppl's daughters, and since he failed to specify which daughter he wanted Foppl's wife decided that this man would get the older one.  
Ludwig Prandtl