Log in

Relevant bibliographies by topics / Ideal gas flow / Journal articles

To see the other types of publications on this topic, follow the link: Ideal gas flow.

Journal articles on the topic 'Ideal gas flow'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Ideal gas flow.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Sun, Wenjing, Wenqi Zhong, and Jingzhou Zhang. "Experimental Investigation on Turbulent Flow Deviation in a Gas-Particle Corner-Injected Flow." Processes 9, no. 12 (2021): 2202. http://dx.doi.org/10.3390/pr9122202.

Full text

Abstract:

An experimental model of a corner-injected flow is built to investigate the turbulent flow behavior by employing the PIV technique. The influences of the ideal tangential circle, the additive particles and the initial gas mass flux on the corner-injected flow are analyzed systematically. To be specific, the flow deviation, the velocity profile, the vortex evolution and the turbulent flow development are discussed quantitatively. The influences of the increasing ideal tangential circle on the turbulent jet deviation are shortened gradually, and the impinging circles are obviously narrowed with

APA, Harvard, Vancouver, ISO, and other styles

2

WANG, Moran. "Similarity of ideal gas flow at different scales." Science in China Series E 46, no. 6 (2003): 661. http://dx.doi.org/10.1360/02ye0072.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Cornelius, Kenneth C., and Kartik Srinivas. "Isentropic Compressible Flow for Non-Ideal Gas Models for a Venturi." Journal of Fluids Engineering 126, no. 2 (2004): 238–44. http://dx.doi.org/10.1115/1.1677499.

Full text

Abstract:

The non-ideal gas equations and mathematical formulation developed in this work using the compressibility factor in the equation of state closely resemble the derivations used for the ideal gas mathematical formulation for a direct comparison of the differences between the ideal versus the non-ideal gas law. The local Mach number is defined for the non-ideal gas. The plenum total variables used in compressible flow are expressed in terms of the local Mach number for the polytrope and Rayleigh models. A power law relationship is derived between the thermodynamic variables that allow an analytic

APA, Harvard, Vancouver, ISO, and other styles

4

Dias, Frédéric, Alan R. Elcrat, and Lloyd N. Trefethen. "Ideal jet flow in two dimensions." Journal of Fluid Mechanics 185 (December 1987): 275–88. http://dx.doi.org/10.1017/s0022112087003173.

Full text

Abstract:

A jet is a stream of one fluid entering another at high speed. In the simplest classical model of jet flow, the geometry is two-dimensional, gravity and viscosity are ignored, the moving fluid is a liquid, and the stationary fluid is a gas whose influence is assumed negligible. The description of this idealized flow can be reduced to a problem of complex analysis, but, except for very simple nozzle geometries, that problem cannot be solved analytically. This paper presents an efficient procedure for solving the jet problem numerically in the case of an arbitrary polygonal nozzle.

APA, Harvard, Vancouver, ISO, and other styles

5

Zhitnikov, V. P., and A. G. Terent'ev. "Axisymmetric flow of ideal fluid past a gas bubble." Fluid Dynamics 28, no. 5 (1994): 667–71. http://dx.doi.org/10.1007/bf01050050.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Hołyst, Robert, Paweł J. Żuk, Anna Maciołek, Karol Makuch, and Konrad Giżyński. "Direction of Spontaneous Processes in Non-Equilibrium Systems with Movable/Permeable Internal Walls." Entropy 26, no. 8 (2024): 713. http://dx.doi.org/10.3390/e26080713.

Full text

Abstract:

We consider three different systems in a heat flow: an ideal gas, a van der Waals gas, and a binary mixture of ideal gases. We divide each system internally into two subsystems by a movable wall. We show that the direction of the motion of the wall, after release, under constant boundary conditions, is determined by the same inequality as in equilibrium thermodynamics dU−đQ≤0. The only difference between the equilibrium and non-equilibrium laws is the dependence of the net heat change, đQ, on the state parameters of the system. We show that the same inequality is valid when introducing the gra

APA, Harvard, Vancouver, ISO, and other styles

7

Almeida, Alcino R. "A Model To Calculate the Theoretical Critical Flow Rate Through Venturi Gas Lift Valves." SPE Journal 16, no. 01 (2010): 134–47. http://dx.doi.org/10.2118/126184-pa.

Full text

Abstract:

Summary A model to calculate the theoretical critical flow rate of nitrogen (N2) or natural gas through a Venturi gas lift valve is described herein. This new model considers real-gas effects not only in density calculations but also in other thermodynamic properties that are relevant during gas isentropic evolution. For the properties of N2, the Bennedict, Webb, and Rubin (BWR) equation of state and an accurate correlation for the ideal-gas isobaric heat capacity were used. For natural gas, the Dranchuk and Abou-Kassem equation, which reproduces the well-known Standing and Katz chart, was use

APA, Harvard, Vancouver, ISO, and other styles

8

Anand, R. K. "Jump relations across a shock in non-ideal gas flow." Astrophysics and Space Science 342, no. 2 (2012): 377–88. http://dx.doi.org/10.1007/s10509-012-1175-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Sirignano, William A. "Compressible flow at high pressure with linear equation of state." Journal of Fluid Mechanics 843 (March 21, 2018): 244–92. http://dx.doi.org/10.1017/jfm.2018.166.

Full text

Abstract:

Compressible flow varies from ideal-gas behaviour at high pressures where molecular interactions become important. It is widely accepted that density is well described through a cubic equation of state while enthalpy and sound speed are functions of both temperature and pressure, based on two parameters, $A$ and $B$, related to intermolecular attraction and repulsion, respectively. Assuming small variations from ideal-gas behaviour, a closed-form approximate solution is obtained that is valid over a wide range of conditions. An expansion in these molecular interaction parameters simplifies rel

APA, Harvard, Vancouver, ISO, and other styles

10

Elmar Agayev, Elmar Agayev. "THE STUDY OF LAMINAR AND TURBULENT FLOW IN TURBINE TYPE OF FLOW METERS." PIRETC-Proceeding of The International Research Education & Training Centre 27, no. 06 (2023): 140–49. http://dx.doi.org/10.36962/piretc27062023-140.

Full text

Abstract:

The paper studies the operation of a turbine-type flow meter under various operating modes. In the industry, flow measuring devices are widely used on oil and gas platforms and terminals. In the processes of production, processing and transportation of oil and gas, which is a strategic raw material, strict state control of its consumption is carried out precisely by means of consumption measurement. A performance study has been carried out for turbine - type gas flow meters under laminar and turbulent gas flow conditions .. One of the main factors that cause damage to the mechanical parts of t

APA, Harvard, Vancouver, ISO, and other styles

11

Santoso, Arif Dwi. "METODE PERHITUNGAN MASSA GAS CO2 YANG DISERAP FOTOBIOREAKTOR DENGAN PERSAMAAN GAS IDEAL." Jurnal Teknologi Lingkungan 11, no. 2 (2016): 239. http://dx.doi.org/10.29122/jtl.v11i2.1208.

Full text

Abstract:

BPPT conducted the mass of CO2 gas calculation in the gas absorption experiments with phytoplankton cultivation in the photobioreaktor (FBR) batch and continous syatem using the ideal gas equation. This study stated that the method of calculation with the ideal gas equation is more simple and practical in providing data analysis compared with biomass methods. Some things to note in this method include good knowledge about the movement of the gas flow diagram of inputs and outputs FBR, an appropriate gas sampling, and accuracy of measuring instruments. The required data in the mass calculation

APA, Harvard, Vancouver, ISO, and other styles

12

Liu, Zhan, Wenguang Jia, Longhui Liang, and Zhenya Duan. "Analysis of Pressure Pulsation Influence on Compressed Natural Gas (CNG) Compressor Performance for Ideal and Real Gas Models." Applied Sciences 9, no. 5 (2019): 946. http://dx.doi.org/10.3390/app9050946.

Full text

Abstract:

This work investigates the effects of pressure pulsations on reciprocating natural gas compressor performance thermodynamically. A nonlinear hybrid numerical model is thus developed to consider the interaction between the compressor and the pipeline system. The suction chamber, compressor cylinder and discharge chamber are modelled integrally based on the first law of thermodynamics and mass balance, and the pipeline flow is described by using the gas dynamic model. Methane is considered as the working fluid and its properties are computed based on ideal and real gas assumptions. For the real

APA, Harvard, Vancouver, ISO, and other styles

13

Tenenev, V. A., and M. R. Koroleva. "Modeling of the Gas Dynamic Processes with Different Equations of State." Intellekt. Sist. Proizv. 21, no. 3 (2023): 115–23. http://dx.doi.org/10.22213/2410-9304-2023-3-115-123.

Full text

Abstract:

The work is devoted to the study of the features of gas-dynamic processes at the high pressures. The flows of air, hydrogen and water vapor are considered. The results obtained using the ideal gas equation and two real gas equations - van der Waals and Soave-Redlich-Kwong are analyzed. The comparison has been done on the numerical simulation results for the safety valve operation problem. The problem was solved in a three-dimensional non-stationary formulation using the finite volume method. Numerical solution method was built on the basis of the Godunov’s method. The results of a comparison o

APA, Harvard, Vancouver, ISO, and other styles

14

He, Nan, Xiaolong Chi, Chi Feng, Manfei Lu, Li Zhang, and Jingming Dong. "Numerical Investigation on the Effect of Wet Steam and Ideal Gas Models for Steam Ejector Driven by Ship Waste Heat." Applied Sciences 13, no. 22 (2023): 12516. http://dx.doi.org/10.3390/app132212516.

Full text

Abstract:

Steam ejectors could improve the energy efficiency of ships by efficiently utilizing low-grade waste heat from ships for seawater desalination or cooling. The internal flow characteristics of steam ejectors can be deeply analyzed through numerical simulation, which is of great significance for improving their performance. Due to the influence of the nonequilibrium phase change, the results of the wet steam model and the ideal gas model are significantly different. In this paper, the flow field characteristics of the wet steam model and the ideal gas model under different primary flow pressures

APA, Harvard, Vancouver, ISO, and other styles

15

Mapleson, W. W. "The theoretical ideal fresh‐gas flow sequence at the start of low‐flow anaesthesia." Anaesthesia 53, no. 3 (1998): 264–72. http://dx.doi.org/10.1046/j.1365-2044.1998.00310.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Ren, Jie, Song Fu, and Rene Pecnik. "Linear instability of Poiseuille flows with highly non-ideal fluids." Journal of Fluid Mechanics 859 (November 16, 2018): 89–125. http://dx.doi.org/10.1017/jfm.2018.815.

Full text

Abstract:

The objective of this work is to investigate linear modal and algebraic instability in Poiseuille flows with fluids close to their vapour–liquid critical point. Close to this critical point, the ideal gas assumption does not hold and large non-ideal fluid behaviours occur. As a representative non-ideal fluid, we consider supercritical carbon dioxide ($\text{CO}_{2}$) at a pressure of 80 bar, which is above its critical pressure of 73.9 bar. The Poiseuille flow is characterized by the Reynolds number ($Re=\unicode[STIX]{x1D70C}_{w}^{\ast }u_{r}^{\ast }h^{\ast }/\unicode[STIX]{x1D707}_{w}^{\ast

APA, Harvard, Vancouver, ISO, and other styles

17

Zyryanov, I. V., Y. A. Boyko, and D. M. Kuchinsky. "Outflow of real gas from the nozzle." Transactions of the Krylov State Research Centre S-I, no. 1 (2021): 349–51. http://dx.doi.org/10.24937/2542-2324-2021-1-s-i-349-351.

Full text

Abstract:

The paper considers the process of real gas flow from a combined nozzle. A recently developed real gas model was used for the calculation. In the course of research, it was found that the real gas model used is workable, since when the supercritical parameters in the nozzle are reached, the mass flow rate of the gas does not tend to zero, like an ideal gas, but increases further.

APA, Harvard, Vancouver, ISO, and other styles

18

Anand, R. K. "Jump relations for magnetohydrodynamic shock waves in non-ideal gas flow." Astrophysics and Space Science 343, no. 2 (2012): 713–33. http://dx.doi.org/10.1007/s10509-012-1279-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Li, Shu Xun, Xiao Gang Xu, Ying Zhe Hou, and Que Li. "Numerical Analysis of Flow Field and Performance Optimization of Axial-Flow Pressure Reducing Valve." Applied Mechanics and Materials 271-272 (December 2012): 1362–65. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.1362.

Full text

Abstract:

In order to promote the technical progress of pressure reducing valve in nature gas transport system, a high pressure pilot operated axial-flow pressure reducing valve was designed and developed. The three-dimensional modeling of the natural gas pressure reducing valve internal flow passage was found by using Solidworks software. Import the flow channel model into meshing in CFD software based on the internal flow channel geometry and flow characteristics. The ideal gas compressible fluid model of natural gas and improved RNG k-Epsilon model were used to solve the pressure and velocity distrib

APA, Harvard, Vancouver, ISO, and other styles

20

Wada, Tatsuaki, and Antonio Maria Scarfone. "Onsager’s Non-Equilibrium Thermodynamics as Gradient Flow in Information Geometry." Entropy 27, no. 7 (2025): 710. https://doi.org/10.3390/e27070710.

Full text

Abstract:

We consider Onsager’s non-equilibrium thermodynamics from the perspective of the gradient flow in information geometry. Assuming Onsager’s reciprocal relations, we can regard his phenomenological equations as gradient-flow equations and develop two different gradient-flow models. We consider their features and their relations. Both models are applied to the ideal gas and van der Waals gas.

APA, Harvard, Vancouver, ISO, and other styles

21

Xu, Hengjie, Pengyun Song, Wenyuan Mao, and Qiangguo Deng. "The performance of spiral groove dry gas seal under choked flow condition considering the real gas effect." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 4 (2019): 554–66. http://dx.doi.org/10.1177/1350650119891563.

Full text

Abstract:

By taking carbon dioxide and hydrogen as lubricating gas, respectively, this paper presents an analysis on the pressure characteristics and temperature distribution of spiral groove dry gas seal which influenced by real gas effect under choked flow condition. Numerical results show that the deviation between real gas and ideal gas, which expressed by the deviation degree between compressibility factor Z and 1, is the main reason for real gas effect affecting sealing performance. Compared with ideal gas model, real gas effect raises exit pressure, opening force, leakage rate, Mach number in dam

APA, Harvard, Vancouver, ISO, and other styles

22

Hanimann, Lucian, Luca Mangani, Ernesto Casartelli, Damian Vogt, and Marwan Darwish. "Real Gas Models in Coupled Algorithms Numerical Recipes and Thermophysical Relations." International Journal of Turbomachinery, Propulsion and Power 5, no. 3 (2020): 20. http://dx.doi.org/10.3390/ijtpp5030020.

Full text

Abstract:

In the majority of compressible flow CFD simulations, the standard ideal gas state equation is accurate enough. However, there is a range of applications where the deviations from the ideal gas behaviour is significant enough that performance predictions are no longer valid and more accurate models are needed. While a considerable amount of the literature has been written about the application of real gas state equations in CFD simulations, there is much less information on the numerical issues involved in the actual implementation of such models. The aim of this article is to present a robust

APA, Harvard, Vancouver, ISO, and other styles

23

Alizada, Gunel. "Gas-hydrodynamics of gas-liquid flow in the reservoir-well system." All Sciences Abstracts 1, no. 2 (2023): 13–15. http://dx.doi.org/10.59287/as-abstracts.1205.

Full text

Abstract:

A hydrodynamic model of gas-liquid flow in the reservoir-well system is developed and the boundary problem is solved.As the volume of liquid in the mixture is very small (5-10%), its effect on the gas-liquid mixture flow was considered only in terms of density change effect. It is assumed that liquid and gas particles move in the pipe at the same speed and there is no mass transfer.The gas is assumed to be ideal and an isothermal process is considered. The solution of some equations in initial and boundary conditions is found and the continuity condition at the well bottom is written, Pc(t) -

APA, Harvard, Vancouver, ISO, and other styles

24

Tang, Jing, Wen Chuan Wang, Xiang Jun Fang, Shi Long Liu, and Wen Long Sun. "Investigations of Energy Separation Effect in Vortex Tube for Real Gases." Advanced Materials Research 724-725 (August 2013): 1293–300. http://dx.doi.org/10.4028/www.scientific.net/amr.724-725.1293.

Full text

Abstract:

This paper aims to investigate real gases energy separation effect such as real natural gas, CH4 and C2H4 in vortex tube. Energy separation phenomena of real natural gas (RNG) were investigated by means of three-dimensional Computational Fluid Dynamics (CFD) method. Flow fields of ideal natural gas (ING), or RNG in low and high pressure were simulated. The results main factors were found that affect the separation effect. At the same time, this paper has illustrated the effect and tendency of energy separation with real gas in the tube under the same cold mass fraction and pressure ratio. The

APA, Harvard, Vancouver, ISO, and other styles

25

Hyhlík, Tomáš. "Development of Modified Incompressible Ideal Gas Model for Natural Draft Cooling Tower Flow Simulation." EPJ Web of Conferences 180 (2018): 02037. http://dx.doi.org/10.1051/epjconf/201818002037.

Full text

Abstract:

The article deals with the development of incompressible ideal gas like model, which can be used as a part of mathematical model describing natural draft wet-cooling tower flow, heat and mass transfer. It is shown, based on the results of a complex mathematical model of natural draft wet-cooling tower flow, that behaviour of pressure, temperature and density is very similar to the case of hydrostatics of moist air, where heat and mass transfer in the fill zone must be taken into account. The behaviour inside the cooling tower is documented using density, pressure and temperature distributions.

APA, Harvard, Vancouver, ISO, and other styles

26

Yang, Jaw-Yen, and Yu-Hsin Shi. "A kinetic beam scheme for ideal quantum gas dynamics." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 462, no. 2069 (2006): 1553–72. http://dx.doi.org/10.1098/rspa.2005.1618.

Full text

Abstract:

A novel kinetic beam scheme for the ideal quantum gas is presented for the computation of quantum gas dynamical flows. The quantum Boltzmann equation approach is adopted and the local thermodynamic equilibrium quantum distribution is assumed. Both Bose–Einstein and Fermi–Dirac gases are considered. Formulae for one spatial dimension is first derived and the resulting beam scheme is tested for shock tube flows. Implementation of high-order methods is also outlined. We only consider the system in the normal phase consisting of particles in excited states and both the classical limit and the near

APA, Harvard, Vancouver, ISO, and other styles

27

Hoffren, J., T. Talonpoika, J. Larjola, and T. Siikonen. "Numerical Simulation of Real-Gas Flow in a Supersonic Turbine Nozzle Ring." Journal of Engineering for Gas Turbines and Power 124, no. 2 (2002): 395–403. http://dx.doi.org/10.1115/1.1423320.

Full text

Abstract:

In small Rankine cycle power plants, it is advantageous to use organic media as the working fluid. A low-cost single-stage turbine design together with the high molecular weight of the fluid leads to high Mach numbers in the turbine. Turbine efficiency can be improved significantly by using an iterative design procedure based on an accurate CFD simulation of the flow. For this purpose, an existing Navier-Stokes solver is tailored for real gas, because the expansion of an organic fluid cannot be described with ideal gas equations. The proposed simulation method is applied for the calculation of

APA, Harvard, Vancouver, ISO, and other styles

28

Allahverdiyev, E., and I. Mezník. "ALGORITHM FOR SELECTING A FLOW METER WITH OPTIMAL PARAMETERS." Danish scientific journal, no. 61 (June 24, 2022): 17–20. https://doi.org/10.5281/zenodo.6782540.

Full text

Abstract:

<strong>Abstract</strong> The paper deals with the selection process of the optimal gas flow meter for information-measuring system. Criteria for selection of the flow meters are studied. The algorithm based on Analytical Hierarchy Process method and Technique for Order Preference by Similar to the Ideal Solution for selection of the gas flow meter is proposed.. The application of the proposed algorithm increases reliability of the final decision. and enables automation of the selection process by using software.

APA, Harvard, Vancouver, ISO, and other styles

29

Evstigneev, Nikolay M., and Oleg I. Ryabkov. "Nonlinear dynamics for the 3D ideal viscous gas flow over the cylinder." Journal of Physics: Conference Series 2090, no. 1 (2021): 012045. http://dx.doi.org/10.1088/1742-6596/2090/1/012045.

Full text

Abstract:

Abstract The system of governing equations for the dynamics of the compressible viscous ideal gas is considered in the 3D bounded domain with the inflow and outflow boundary conditions. The cylinder is located in the domain. Such problem is simulated using the high order WENO-scheme for inviscid part of the equations and using 4-th order central approximation for the viscous tensor part with the third order temporal discretization. The method of Proper Orthogonal Decomposition (POD) is applied to the problem at hand in order to extract the most active nodes. Cascades of bifurcations of periodi

APA, Harvard, Vancouver, ISO, and other styles

30

Rubina, L. I., and O. N. Ul’yanov. "On the Problem of the Flow of an Ideal Gas around Bodies." Proceedings of the Steklov Institute of Mathematics 301, S1 (2018): 145–54. http://dx.doi.org/10.1134/s0081543818050127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Criado-Sancho, M., D. Jou, and J. Casas-Vázquez. "Temperature in ideal gas mixtures in Couette flow: A maximum-entropy approach." Physics Letters A 372, no. 13 (2008): 2172–75. http://dx.doi.org/10.1016/j.physleta.2007.10.094.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Singh, K. S., and R. Prasad. "A self-similar flow behind spherical shock wave in non-ideal gas." Astrophysics and Space Science 132, no. 2 (1987): 257–62. http://dx.doi.org/10.1007/bf00641757.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Nath, G., and A. K. Sinha. "Magnetogasdynamic Shock Waves in Non-ideal Gas Under Gravitational Field-Isothermal Flow." International Journal of Applied and Computational Mathematics 3, no. 1 (2015): 225–38. http://dx.doi.org/10.1007/s40819-015-0101-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Yagudin, S. V. "Supersonic ideal-gas flow of in the throat region of a nozzle." Fluid Dynamics 31, no. 3 (1996): 448–53. http://dx.doi.org/10.1007/bf02030229.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Rebhan, E. "An infinity of conservation laws for highly symmetric nonisentropic ideal gas flow." Physica D: Nonlinear Phenomena 34, no. 1-2 (1989): 289–94. http://dx.doi.org/10.1016/0167-2789(89)90241-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Ryzhkov, Sergei V., and Victor V. Kuzenov. "Analysis of the ideal gas flow over body of basic geometrical shape." International Journal of Heat and Mass Transfer 132 (April 2019): 587–92. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2018.12.032.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Yagudin, S. V. "Choking of ideal-gas flow in convergent nozzles and integral nozzle characteristics." Fluid Dynamics 29, no. 6 (1994): 862–68. http://dx.doi.org/10.1007/bf02040796.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Moore, D. W., and D. I. Pullin. "The vortex pair in a compressible ideal gas." Fluid Dynamics Research 3, no. 1-4 (1988): 377–80. http://dx.doi.org/10.1016/0169-5983(88)90095-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Wang, Yi, Bo Yu, and Ye Wang. "Acceleration of Gas Reservoir Simulation Using Proper Orthogonal Decomposition." Geofluids 2018 (2018): 1–15. http://dx.doi.org/10.1155/2018/8482352.

Full text

Abstract:

High-precision and high-speed reservoir simulation is important in engineering. Proper orthogonal decomposition (POD) is introduced to accelerate the reservoir simulation of gas flow in single-continuum porous media via establishing a reduced-order model by POD combined with Galerkin projection. Determination of the optimal mode number in the reduced-order model is discussed to ensure high-precision reconstruction with large acceleration. The typical POD model can achieve high precision for both ideal gas and real gas using only 10 POD modes. However, acceleration of computation can only be ac

APA, Harvard, Vancouver, ISO, and other styles

40

Zheng, H. T., L. Cai, Y. J. Li, and Z. M. Li. "Computational fluid dynamics simulation of the supersonic steam ejector. Part 1: Comparative study of different equations of state." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 3 (2011): 709–14. http://dx.doi.org/10.1177/0954406211415777.

Full text

Abstract:

The aim of this study is to investigate the use of computational fluid dynamics in predicting the performance and geometry of the optimal design of a steam ejector used in a steam turbine. Many scholars have analysed the steam ejector using the ideal gas model, which lacks accuracy in terms of calculating the flow field of the ejector. This study is reported in a series of two papers. The first part covers the validation of CFX 11.0 results using different equations of state (EOS) on the converging–diverging nozzle flow field carried out with the experimental value. The IAPWS IF97 real gas mod

APA, Harvard, Vancouver, ISO, and other styles

41

Chauhan, Astha, and Rajan Arora. "Similarity Solutions of Strong Shock Waves for Isothermal Flow in an Ideal Gas." International Journal of Mathematical, Engineering and Management Sciences 4, no. 5 (2019): 1094–107. http://dx.doi.org/10.33889/ijmems.2019.4.5-087.

Full text

Abstract:

Self-similar solutions of the system of non-linear partial differential equations are obtained using the Lie group of invariance technique. The system of equations governs the one dimensional and unsteady motion for the isothermal flow of an ideal gas. The medium has been taken the uniform. From the expressions of infinitesimal generators involving arbitrary constants, different cases arise as per the choice of the arbitrary constants. In this paper, the case of a collapse of an implosion of a cylindrical shock wave is shown in detail along with the comparison between the similarity exponent o

APA, Harvard, Vancouver, ISO, and other styles

42

Vitale, Salvatore, Tim A. Albring, Matteo Pini, Nicolas R. Gauger, and Piero Colonna. "Fully turbulent discrete adjoint solver for non-ideal compressible flow applications." Journal of the Global Power and Propulsion Society 1 (November 22, 2017): Z1FVOI. http://dx.doi.org/10.22261/jgpps.z1fvoi.

Full text

Abstract:

Abstract Non-Ideal Compressible Fluid-Dynamics (NICFD) has recently been established as a sector of fluid mechanics dealing with the flows of dense vapors, supercritical fluids, and two-phase fluids, whose properties significantly depart from those of the ideal gas. The flow through an Organic Rankine Cycle (ORC) turbine is an exemplary application, as stators often operate in the supersonic and transonic regime, and are affected by NICFD effects. Other applications are turbomachinery using supercritical CO2 as working fluid or other fluids typical of the oil and gas industry, and components o

APA, Harvard, Vancouver, ISO, and other styles

43

El-Behery, S. M., W. A. El-Askary, M. H. Hamed, and K. A. Ibrahim. "Numerical and experimental study of heat transfer in gas-solid flow: Particle cooling." International Review of Applied Sciences and Engineering 3, no. 1 (2012): 21–29. http://dx.doi.org/10.1556/irase.3.2012.1.3.

Full text

Abstract:

Abstract Heat transfer in gas-solid two-phase flow is investigated numerically and experimentally. The numerical computations are carried out using four-way coupling Eulerian-Lagrangian approach. The effects of particle rotation and lift forces are included in the model. The gas-phase turbulence is modeled via low Reynolds number k-ε turbulence models. The SIMPLE algorithm is extended to take the effect of compressibility into account. The experimental study is performed using crushed limestone to simulate the solid phase. The effects of Reynolds numbers, particles size and temperature on the

APA, Harvard, Vancouver, ISO, and other styles

44

Bober, W., and W. L. Chow. "Nonideal Gas Effects for the Venturi Meter." Journal of Fluids Engineering 113, no. 2 (1991): 301–4. http://dx.doi.org/10.1115/1.2909496.

Full text

Abstract:

A method for treating nonideal gas flows through a venturi meter is described. The method is an extension of a previous study reported in an earlier paper. The method involves the determination of the expansion factor which may then be used to determine the mass flow rate through the venturi meter. The method also provides the means for determining the critical pressure ratio as well as the maximum flow rate per unit throat area. The Redlich-Kwong equation of state is used, which allows for closed form expressions for the specific heat at constant volume and the change in entropy. The Newton-R

APA, Harvard, Vancouver, ISO, and other styles

45

Yachmenev, P. S., V. V. Fedyanin, and I. S. Vavilov. "DEVELOPMENT OF A THRUST MEASUREMENT STAND BASED ON THE AERODYNAMIC METHOD FOR ELECTRIC THRUSTERS OF SMALL SPACECRAFT." DYNAMICS OF SYSTEMS, MECHANISMS AND MACHINES 11, no. 2 (2023): 51–57. http://dx.doi.org/10.25206/2310-9793-2023-11-2-51-57.

Full text

Abstract:

A traction measurement stand based on the aerodynamic method has been developed. To test the stand, a prototype electric rocket engine was used as a cold gas engine. The working medium was nitrogen gas. At a flow rate of 1.2 mg/s, the thrust value was from 0.674 to 0.736 mN, at a flow rate of 1.7 mg/s, the thrust value was 0.934-1 mN and at a flow rate of 2.6 mg/s, the thrust value was from 1.59 to 1.634 mN. The experimental specific thrust impulse was at a flow rate of 1.2 mg/s from 574 to 613 m/s, at a flow rate of 1.7 mg/s from 549 to 588 m/s and at a flow rate of 2.6 mg/s from 612 to 623 m

APA, Harvard, Vancouver, ISO, and other styles

46

Sun, Zhiqiang, Shuai Shao, and Hui Gong. "Gas–liquid Flow Pattern Recognition Based on Wavelet Packet Energy Entropy of Vortex-induced Pressure Fluctuation." Measurement Science Review 13, no. 2 (2013): 83–88. http://dx.doi.org/10.2478/msr-2013-0016.

Full text

Abstract:

Here we report a novel flow-pattern map to distinguish the gas-liquid flow patterns in horizontal pipes at ambient temperature and atmospheric pressure. The map is constructed using the coordinate system of wavelet packet energy entropy versus total mass flow rate. The wavelet packet energy entropy is obtained from the coefficients of vortex-induced pressure fluctuation decomposed by the wavelet packet transform. A triangular bluff body perpendicular to the flow direction is employed to generate the pressure fluctuation. Experimental tests confirm the suitability of the wavelet packet energy e

APA, Harvard, Vancouver, ISO, and other styles

47

Al-Musafir, Rahman Shnain Abdulmohsin. "Axial Dispersion and Back-mixing of Gas Phase in Pebble Bed Reactor." Tikrit Journal of Engineering Sciences 18, no. 3 (2011): 1–12. http://dx.doi.org/10.25130/tjes.18.3.01.

Full text

Abstract:

Despite the worldwide attended of pebble bed reactors (PBRs), there is a lack of fundamental understanding of the complex flow pattern. In this work, the non-ideal flow behavior of the gas phase, which is used, for cooling has been investigated experimentally in a 0.3 m diameter pebble bed. The extent of mixing and dispersion of the gas phase has been qualified. The effect of gas velocity on the axial dispersion has been investigated with range from 0.05 to 0.6 m/s covering both the laminar and turbulent flow regimes. Glass bead particles of 1.2 cm diameter and 2.5 gm/cm3, which is randomly an

APA, Harvard, Vancouver, ISO, and other styles

48

Tan, Jinglu, Kim A. Stelson, and Kevin A. Janni. "Compressible-Flow Modeling With Pseudo Bond Graphs." Journal of Dynamic Systems, Measurement, and Control 116, no. 2 (1994): 272–80. http://dx.doi.org/10.1115/1.2899220.

Full text

Abstract:

A finite lump pseudo bond graph scheme for isothermal and isentropic pipe flows of ideal gas is developed on the basis of the governing differential equations and an assumption of staggered spatial profiles for the variables. Element constitutive relationships are formally derived. A new CONVECTANCE element is defined to model convective acceleration. The bond graph is simple and convenient to use.

APA, Harvard, Vancouver, ISO, and other styles

49

Afonin, Gennadiy I., and Anton G. Afonin. "The use of the principle of least action in a study of ideal gas flow in subsonic parts of a nozzle." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 94 (2025): 79–92. https://doi.org/10.17223/19988621/94/7.

Full text

Abstract:

The principle of least action is formulated for a steady flow of an inviscid non-heat conducting ideal gas in an axisymmetric channel of variable cross section. The problem on the minimum of action for a steady flow is reduced to a variational problem on the minimum of the Lagrangian in an arbitrary cross section at a given flow rate. Using the obtained optimality condition, a marching method is constructed to derive the flow parameters and channel shape both downstream and upstream relative to a conditional initial section referred to as the "inlet" section, where the flow parameters and gas

APA, Harvard, Vancouver, ISO, and other styles

50

Wei, Jian Zheng, Rui Qiang Ma, Hui Feng Tan, and Xing Wen Du. "Simulation for Gas-Membrane Interaction of Folded Membrane Tubes during Inflation." Advanced Materials Research 594-597 (November 2012): 2627–31. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2627.

Full text

Abstract:

It is very important for gas-membrane interaction between compressible ideal gas and elastic membrane structure of space folded tubes during inflation deployment. This paper analyses gas flow field of the folded tube by the finite volume method, and simulates inflation process of the membrane tube with different height of the baffle. A finite volume model of gas flow field is established in the folded membrane tube, and variations of the pressure inside the membrane tube are obtained with height of the baffle and inlet flow rate. And then, the gas-membrane interaction is calculated by couple t

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!