THEORETICAL-ANALYSIS OF ION-DRAG PUMPING

An improved one-dimensional theoretical model for ion-drag pumping is developed. All three components of the current density are considered, and the distributions of the charge density and electrical field unde r various conditions are provided, The solutions presented are in nond imensional form, while the combined effects of the controlling fluid p roperties and operating conditions are incorporated into three nondime nsional numbers. The efficiency plots given in terms of the three nond imensional numbers play a vital role in the selection of the working f luid and design of an efficient ion-drag pump.