| OCR Text |
Show 11 that eddy viscosity dependent only constant was upon the radial of motion for the assumed the velocity the radial on cosity. sall radial a constant velocity, radius of with By comparing (10) be tangential velocity, Rietema or a linear function of His definition of the Reynolds position. the inlet to the number hydrocyclone experimental results as based was and eddy vis- by Kel obtained (24) Rietema concluded that, for by Ter Linden, and were In order to solve the coordinate. resulting equation radial flow conditions and that all well- constructed hydrocyclones, this Reynolds number had least ten. Rietema also concluded that the eddy diffusion due to turbulence this be neglected in can is to be doubted, measurement a derived vortex finder was is the that observed dependent In a zero mixing-length model while the horizontal core is of the of fluid through the absent. The radial upon the horizontal were axial level of the higher than those reported velocity compared well with Bloor and Ingham(26) to evaluate the effect assuming te tangential velocity level compo- Pulling.(12) and subsequent publication, fied Prandtl cosity, The locus of by Bradley leakage and the air hydrocyclone, and the predicted values (10) by Kelsall. velocity hydrocyclone, making three drastic simplifica- negligible shown to be for all expressions that the flow is inviscid, velocity However, separation. since the electrode apparatus used for the Ingham(25) of the fluid in tions: size of turbulence is suspect. Bloor and nents calculating value of at a hydrocyclone. scale of the turbulent eddies was to be applied of eddy visof independent The variation of the deducerl from the modi a length boundary-layer |
