Rocket Engine Coolant Manifold Flow Study

摘要

To provide data for the design of regeneratively-cooled rocket engines, Tte flow of liquid water through orifices with cross flow at the inlet has been studied experimentally to determine the effect of the cross flow velocity on the flow through the orifice, measured by the discharge coefficient. The test apparatus consisted of a manifold of square cross section with five active orifices along its length having their centerlines normal to the centerline of the manifold. The manifold design allowed for two values of orifice diameter, two values of orifice length, and two values of orifice inlet configuration, chamfered and non-chamfered. The flow control system allowed for independent control of manifold pressure and flow velocity. The test results showed a relatively small decrease in discharge coefficient with increasing cross flow velocity. This decrease was most clearly evident for non-chamfered orifices with larger length-to-diameter ratio.