incompressible coker hyporheic isochoric volumetric komatiite unit Poiseuille hydrograph Napindan dacite Netflow interflow Tatwa cytometry inviscid microchannels Leavening cytometer Yolla electroosmotic Navier vorticity lava Dampers toroidally terga stoplogs andesitic volume tankless molQfK regurgitant Supermotard Mobjack meltwaters gas