Convergent Nozzle Flow Velocity and Area Equation and Calculator Nozzles are used in steam and gas turbines, in rocket motors, in jet engines and in many other applications. Two types of nozzle are considered: the ‘convergent nozzle’, where the flow is subsonic; and the ‘convergent divergent...
Some of the parameters used to express the hydrodynamic equation usually used to describe the flow of an ideal compressible gas through a nozzle do not lend themselves to easy laboratory measurement, and also the equation is not directly applicable to a normal viscous gas. To circumvent these pro...
Due to the pressure drop across the nozzles preceding the critical nozzle (smallest area) in an impactor, the flow rate vs pressure ratio curve is shifted toward higher pressure ratios as compared to a single nozzle. An equation to calculate the flow rate of a viscous gas through any nozzle...
This leads to a rate equation for quality. The two-phase flow is treated numerically by combining the rate equation with a volume-of-fluid algorithm. Unsteady calculations of cavitating flow in a converging–diverging passage and in a channel with a triangular obstacle show cyclically developing ...
By using the flow rate equation M=ρu⋅uπ≀2−v∗=const and expressing the gas-dynamic function qu through the displacement area v∗ in the form qu=π≀cr2−vcr∗π≀2−v∗, we transform equation (2) to the following form: (6)dv∗∗dx+1ududx2+H−Mu2v∗...
ṁ - mass flow rate Fluid flow rate in terms of units of mass per unit of time V1- upstream velocity Flow velocity at the nozzle inlet where flow diameter is D1 T1- upstream temperature Fluid temperature for gas density calculation based on the ideal gas state equation ...
is equal to the critical pressure ratio (p2/p1)c, At this point, flow through the nozzle will be sonic and the pressure at the exit of the nozzle will be the same as the pressure outside the tank (p2=p'2). In this case, the weight flow rate can be determined from the equation...
The results from equation hypothesis test and test for lack of fit of flow model shows that those three flow models work well. Nozzle flow model validation trials show that the relative errors of model flow and actual flow are small, while the maximum relative error is 6.50%; the flows ...
Orifice, Nozzle and Venturi Flow Rate Meters The orifice, nozzle and venturi flow rate meters makes the use of the Bernoulli Equation to calculate fluid flow rate using pressure difference through obstructions in the flow. In a flow metering device based on the Bernoulli Equation the downstream...
Under these conditions, a nozzle should have a converging shape if a continuous increase in velocity is desired since by virtue of the continuity equation ρvF = const, the area F of the nozzle cross section must decrease in inverse proportion to the rise in velocity. However, with a ...