Accession Number : AD0675280

Title :   NONSTEADY FLOWS IN TUBES (NESTATSIONARNYE TECHENIYA V TRUBAKH),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Kochenov,I. S. ; Kuznetsov,Yu. N.

Report Date : 08 NOV 1967

Pagination or Media Count : 13

Abstract : The article starts with a theoretical discussion of the subject and a review of previous work in the field. Experimental determination of the coefficient of unsteady state friction resistance is difficult since the measuring apparatus and the equipment must be practically without inertia. The experiments in this case were carried out in two different experimental units with water and oil as the working substances. Pressure gradients were measured in three successive sections of a round tube with a diameter of 0.007 meters in the stabilized flow region. The measurements were made with an induction sensing device, type DIF 1-M; and, a pressure drop of 20,000 netwons/sq meter could be measured with an accuracy up to 0.5%. The experiments were carried out in a range of Reynolds numbers from 1,000 to 10,000. (Author)

Descriptors :   (*HYDRODYNAMICS, USSR), FLUID FLOW, PIPES, FRICTION, THEORY, REYNOLDS NUMBER, NAVIER STOKES EQUATIONS, PRESSURE, WATER, OILS

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE