Gas and liquid contact apparatus – Fluid distribution – Valved
Patent
1979-04-11
1980-11-04
Miles, Tim R.
Gas and liquid contact apparatus
Fluid distribution
Valved
138 39, 261DIG56, 261DIG78, 415DIG1, F02M 902
Patent
active
042319714
ABSTRACT:
A flow device and method delivers a gaseous medium to utilization equipment having variable pressure conditions at its intake. A gaseous medium intake zone connects with structure defining a variable area throat zone for constricting the flow of the gaseous medium to increase its velocity to sonic. Wall structure downstream from the throat zone provides a gradually diverging zone for efficiently recovering the kinetic energy of the high velocity gaseous medium as static pressure. Perforations are provided in the wall structure downstream and spaced from the throat zone, and these perforations connect on the back side of the wall structure with the intake of the utilization equipment. When supersonic flow occurs the high velocity mass moving past the perforations pulls a small portion of the gaseous medium already delivered to the intake of the utilization equipment into the gradually diverging zone. Such recirculated medium functions to disturb the supersonic flow and thereby shift the location of shock upstream from where it would otherwise occur to the location of the perforations.
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Dresser Industries Inc.
Miles Tim R.
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