Results 1 to 10 of about 8,855,165 (345)

INFLUENCE OF WIND WAVES ON THE FLOW IN FLOWING RESERVOIRS

open access: yesInternational Islamic University Malaysia Engineering Journal, 2020
: Methods are given for calculating the formation of wind waves in flowing reservoirs, taking into account oncoming and associated currents and the limitation of acceleration by the banks.
Sobir Eshev   +3 more
doaj   +1 more source

Design and performance evaluation of a high temperature axisymmetric plug nozzle [PDF]

open access: yesINCAS Bulletin, 2023
In this study, a method for designing supersonic nozzles with axisymmetric plugs at high temperature has been proposed. The approach is based on the theory of Prandtl-Mayer expansion at high temperatures using the method of characteristics.
Ahmed ABDALLAH ELHIRTSI, Toufik ZEBBICHE
doaj   +1 more source

One-Dimensional Gas Flow Analysis of the Intake and Exhaust System of a Single Cylinder Diesel Engine

open access: yesJournal of Marine Science and Engineering, 2020
In order to design a diesel engine system and to predict its performance, it is necessary to analyze the gas flow of the intake and exhaust system. Gas flow analysis in a three-dimensional (3D) format needs a high-resolution workstation and an enormous ...
Kyong-Hyon Kim, Kyeong-Ju Kong
doaj   +1 more source

Universal Form of Radial Hydraulic Machinery Four-Quadrant Equations for Calculation of Transient Processes

open access: yesEnergies, 2023
Suter curves for the Wh and Wm characteristics and four-quadrant (4Q) diagrams of 11 radial pump–turbine models with different specific speeds (nq = 24.34, 24.8, 27, 28.6, 38, 41.6, 41.9, 43.83, 50, 56, and 64.04) are presented for the first time in this
Zdravko Giljen, Miloš Nedeljković
doaj   +1 more source

Modelling and Simulation Hydrodynamics Processes in Liquefied Natural Gas Transportation Systems

open access: yesJournal of Marine Science and Engineering, 2022
Global natural gas resources are growing and are increasingly geographically diverse. A Floating Storage and Regasification Unit (FSRU) is one of the most commonly used vessel types in the global ship fleet due to the possibility of storage, reloading to
Marijonas Bogdevicius   +4 more
doaj   +1 more source

Identifying the best method for linearizing the nonlinear friction term to analyze the transient flow in pipeline systems [PDF]

open access: yesJournal of Applied Research in Water and Wastewater, 2022
To analyze transient flows, continuity and momentum equations must be solved. Due to the non-linear friction term in the momentum equation, numerical methods such as method of characteristics (MOC) are used to analyze the problem in thetime domain ...
Mahshid Alsadat Mousavian   +2 more
doaj   +1 more source

GPU Acceleration of Hydraulic Transient Simulations of Large-Scale Water Supply Systems

open access: yesApplied Sciences, 2018
Simulating hydraulic transients in ultra-long water (oil, gas) transmission or large-scale distribution systems are time-consuming, and exploring ways to improve the simulation efficiency is an essential research direction. The parallel implementation of
Wanwan Meng   +5 more
doaj   +1 more source

Classical solution of one problem of a perfectly inelastic impact on a long elastic semi-infinite bar with a linear elastic element at the end

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2022
In this article, we study the classical solution of the mixed problem in a quarter of a plane for a one-dimensional wave equation. This mixed problem models the propagation of displacement waves during a longitudinal impact on a bar, when the load ...
Viktor I. Korzyuk, Jan V. Rudzko
doaj   +1 more source

Implementation and Validation of a Free Open Source 1D Water Hammer Code

open access: yesFluids, 2018
This paper presents a free code for calculating 1D hydraulic transients in liquid-filled piping. The transient of focus is the Water Hammer phenomenon which may arise due to e.g., sudden valve closure, pump start/stop etc.
Rune Kjerrumgaard Jensen   +4 more
doaj   +1 more source

High‐accuracy difference schemes for the nonlinear transfer equation

open access: yesMathematical Modelling and Analysis, 2007
In the present paper, for the initial boundary value problem for the non‐homogeneous nonlinear transport equationthe basic principles for constructing difference schemes of any order of accuracy O(#GTM), M ≥ 1, on characteristic grids with the minimal ...
Agnieszka Paradzinska, Piotr Matus
doaj   +1 more source

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