Polymeric materials, cellular, flexible. Determination of air flow value at constant pressure-drop

2010 ◽  
Keyword(s):  
Pressure Drop ◽  
Constant Pressure ◽  
Air Flow ◽  
Polymeric Materials

Determination of pressure drop for air flow through sintered metal porous media using a modified Ergun equation

2016 ◽  
Vol 27 (4) ◽  
pp. 1134-1140 ◽  
Author(s):  
Wei Zhong ◽  
Ke Xu ◽  
Xin Li ◽  
Yuxuan Liao ◽  
Guoliang Tao ◽  
...  
Keyword(s):  
Porous Media ◽  
Pressure Drop ◽  
Air Flow ◽  
Ergun Equation ◽  
Sintered Metal ◽  
Flow Through

scholarly journals Modeling the Air Flow Cooling Process and Determining the Geometric Dimensions of the GASK Model

2021 ◽  
Vol 2096 (1) ◽  
pp. 012200
Author(s):  
I V Zaychenko ◽  
V S Sokolova ◽  
S A Gordin ◽  
V V Bazheryanu
Keyword(s):  
Pressure Drop ◽  
Gas Flow ◽  
Pressure Ratio ◽  
Air Flow ◽  
Gas Jet ◽  
Gas Flow Rate ◽  
Special Design ◽  
Cooling Process ◽  
Geometrical Dimensions

Abstract The article is devoted to the calculation of the parameters of the air flow cooling process and the determination of the geometrical dimensions of a model of a gas-jet apparatus of a special design with a gas flow bifurcation (GASK). The article discusses the device and the principle of operation of the GASK, calculates the dependences of temperature on the pressure drop, gas flow rate on the gas pressure ratio. The calculated parameters of the process under consideration and the geometric dimensions of the GASK are given.

scholarly journals Determination of the Theoretical and Actual Working Volume of a Hydraulic Motor

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5933
Author(s):  
Pawel Sliwinski
Keyword(s):  
Pressure Drop ◽  
Flow Rate ◽  
Constant Pressure ◽  
Nonlinear Function ◽  
Experimental Tests ◽  
Hydraulic Motor ◽  
Volume Calculation ◽  
Actual Working ◽  
Working Volume

A new methodology of determination of the theoretical and actual working volume of a hydraulic motor based on the characteristics of the delivered flow rate into hydraulic motor vs. the rotational speed at a constant pressure drop in the working chambers is described in this paper. A new method of describing the delivered flow rate into a motor per one shaft revolution as a nonlinear function of the pressure drop in the motor working chamber is proposed. The influence of the flowmeter location in the measurement system on the result of the theoretical and actual working volume calculation is described. It is shown that, in order to assess the energy losses (volumetric and mechanical) in the motor, the actual working volume must be a polynomial function (third degree) of its pressure drop in the working chambers. The result of the experimental tests of the satellite hydraulic motor confirmed the validity of the proposed method. The result of the calculation of the theoretical working volume of the motor according to the proposed method was compared with the results of calculations according to known methods.

MULTIDIMENSIONAL SIMULATIONS AND TEST FIRES OF A HYDROGEN-FUELED RAMJET WITH AN ANNULAR DETONATIVE COMBUSTOR AT APPROACHING AIR FLOW OF MACH 2 AND 1.5

2020 ◽  
Author(s):  
V. S. IVANOV ◽  
◽  
V. S. AKSENOV ◽  
S. M. FROLOV ◽  
P. A. GUSEV ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
High Speed ◽  
Constant Pressure ◽  
Air Flow ◽  
Thermodynamic Cycle ◽  
Aerial Vehicles ◽  
Mach Numbers

Modern high-speed unmanned aerial vehicles are powered with small-size turbojets or ramjets. Existing ramjets operating on the thermodynamic cycle with de§agrative combustion of fuel at constant pressure are efficient at flight Mach numbers M ranging from about 2 to 6.

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