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Choked flow is a limiting condition where the mass flow cannot increase with a further decrease in the downstream pressure environment for a fixed upstream pressure and temperature. For homogeneous fluids, the physical point at which the choking occurs for adiabatic conditions is when the exit plane velocity is at sonic conditions; i.e., at a ...
Imperial Chemical Industries (ICI) was a British chemical company. It was, for much of its history, the largest manufacturer in Britain. [1] Its headquarters were at Millbank in London. ICI was a constituent of the FT 30 and later the FTSE 100 indices. ICI was formed in 1926 as a result of the merger of four of
The mass flow rate for a compressible fluid will increase with increased upstream pressure, which will increase the density of the fluid through the constriction (though the velocity will remain constant). This is the principle of operation of a de Laval nozzle. Increasing source temperature will also increase the local sonic velocity, thus ...
A graphical depiction of the relationship between Δp / L, the pressure loss per unit length of pipe, versus flow volume Q, for a range of choices for pipe diameter D, for air at standard temperature and pressure. Units are SI. Lines of constant Re √ f D are also shown. [17] Friction loss takes place as a gas, say air, flows through duct work ...
The flow of a gas or hydrocarbon liquid down a pipe line causes erosion as a result of the contact between the pipe wall and the medium being transported. The main factors that increase erosion are the flow rate and the contamination levels present in the gas or hydrocarbon fluid.
A huge shipping vessel that collided with a major bridge in Baltimore has left numerous people missing and could cause significant economic and social disruption, experts say.. Many questions ...
The metal truss-style bridge has a suspended deck, a design that contributed to its total collapse, engineers say. The ship appeared to hit a main concrete pier, which rests on soil underwater and ...
The analysis of gas flow through de Laval nozzles involves a number of concepts and assumptions: For simplicity, the gas is assumed to be an ideal gas. The gas flow is isentropic (i.e., at constant entropy). As a result, the flow is reversible (frictionless and no dissipative losses), and adiabatic (i.e., no heat enters or leaves the system).