,  ,  ,   |     partial derivative with respect to axis directions and time | 
  |     at the wall | 
  |     asymptotic quantity | 
  |     turbulent | 
 ,  ,   |     reference directions | 
 ,  ,   |     related to x,y,z-axis direction | 
  |     reference value | 
  |     related to pressure | 
  |     related to momentum equations | 
  |     solvent part | 
  |     extra stress part |