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13 articles for “high-speed flows”
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CFD Analysis and Prediction of Shockwave/Boundary-Layer Interaction at Hypersonic Flows Using RANS Models
Abstract: Interaction of shockwaves with turbulent boundary layer plays an important role in the design and operability of high-speed aerospace vehicles and air-breathing engines. The adverse pressure gradient of the shock is often strong enough to separate the boundary layer. The objective of the present research paper deals with the analysis of hypersonic viscous flows dominated by strong shockwave/boundary-layer interactions (SWBLI) over wing-flap and wing-fuselage junction configurations. The effects of the …
Published in International Journal of Computer Aided Manufacturing · Vol. 5, Issue 2, 2019 · pp. 33–50 Read article
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Study of the Fuel Injector Nozzle of the CI Engine
Abstract: A nozzle is a compounds present on all gas turbine engines. that produces thrust, redirects exhaust gases backinto the streaming site, and maintains mass flow rates. There are many various varieties of nozzles, butdivergent and convergent nozzles are the ones that are most normally utilized. The paper discussed variousfluids flowing at different velocities and convergent and divergent nozzle diameters. Thermal and chemicalenergy are transformed into kinetic using the nozzle. The …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 8, Issue 2, 2022 · pp. 30–35 Read article
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Design, Simulation and Analysis of Jato Full Cone Nozzle to Compare Theoretical and Analytical Results Using Ansys CFX Software
Abstract: A spray nozzle is a device that facilitates formation of spray in a particular manner due to its shape or design. It atomizes the liquid into spray of droplets. It is often a pipe or a tube of varying cross sectional area and it can be used to direct or modify the flow of liquid. It is used to control rate of flow, speed, spray angle, pressure of the stream …
Published in International Journal of Computer Aided Manufacturing · Vol. 6, Issue 1, 2020 · pp. 57–65 Read article
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Investigation of Tangential Shear Stress and Frictional Torque Coefficient over a Rotating Disk of the Rotor-Stator System
Abstract: Abstract The study investigates the prediction of tangential shear stress and the frictional torque coefficient over a rotating disk in a rotor-stator system under laminar inward flow conditions. The interaction between the rotating and stationary disks is governed by key parameters, such as volumetric flow rate, rotational speed of the disk, and the axial clearance between the two surfaces. These parameters are expressed in terms of dimensionless quantities, including the …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 11, Issue 1, 2025 · pp. 6–14 Read article
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A study on C, H and L type prismatic buildings for Synoptic wind flow.
Abstract: The atmospheric boundary layer can be defined as part of the troposphere at the lowest level which is influenced by the presence of the earth’s surface, and responds to surface forcing within a timescale of about an hour or less. The boundary layer depth might differ from hundreds of meters to a few kilometers. The wind that blows due to Atmospheric Boundary Layer is known as synoptic wind. Moreover, thunderstorms …
Published in International Journal of Construction Engineering and Planning · Vol. 6, Issue 1, 2020 · pp. 6–14 Read article
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Analysis of Optimal Clearance Volume Between Two Concentric Cylinders in a Couette Flow Membrane Module Using a Computational Fluid Dynamics Approach
Abstract: Membrane-based separation has become an integral part of the separation industry due to its diverse applications across various fields. However, this progress is often hindered by two major challenges: fouling and concentration polarization. Many membrane modules have made significant efforts to overcome these obstacles, yet a satisfactory solution to mitigate these issues and facilitate membrane-based processes in the separation industries is still needed. These issues are successfully handled using Dynamic …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 1, 2025 · pp. 135–143 Read article
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Identification of diesel engine defects of corvette type naval ships
Abstract: One of the main machineries of a ship is the high-speed diesel engine, which is used for main and auxiliary propulsion systems. Due to the high cost of these assets, their operational reliability needs to be optimally ensured for efficient and effective exploitation of these machineries. The current existing flow chart of registering diesel engine defects has been reviewed and a new methodology, which is more systematic and reliable has …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 3, Issue 1, 2017 · pp. 1–13 Read article
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Diesel Engine Combustion and Emission Characteristics Study, Taking into Account the Potential of Biogas Substitution for the Purpose of Enhancing Environmental Cleanliness and Promoting Health
Abstract: Necessity for alternative fuels arises from the escalating energy requirements and the detrimental effects of fossil fuel emissions on environmental well-being. Alternative fuels have been extensively researched to improve energy efficiency. A study examines how alternative fuel affects compression ignition (CI) engine performance, pollution, and combustion. Biogas is investigated as a diesel engine fuel substitute in this study using computational fluid dynamics (CFD). Upon doing a thorough examination of the …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 9, Issue 1, 2023 · pp. 24–39 Read article
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A Novel Honey Badger Optimization MPPT Control for a High Gain Non-Isolated DC–DC Converter for PV Applications
Abstract: The Pulse-width modulation (PWM), a technique used by DC-DC power converters, is currently a hot topic in a variety of applications, including those utilising renewable energy sources. Thus, A novel, The development of a very effective non-isolated converter. To extract the maximum PV system power. In varying weather conditions, maximum power is used to control PV system loading. The maximum power of a PV system is controlled using a fractional …
Published in International Journal of Electrical Power System and Technology · Vol. 9, Issue 1, 2023 · pp. 38–50 Read article
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Descriptive Analysis for different operating mode of MOSFET semiconductor
Abstract: The brief working analysis for different junction of MOSFET is discussed in the article. The experimental reasons viable for the MOSFET controlled voltage along with the unipolar current flow is provided. The interchangeable terminals of the semiconductor devices for enhancing their efficiency are enabled for proper functioning. It can be operate in two different mode that is enhancement & depletion mode. Both the modes have been discussed in brief in …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 8, Issue 1, 2022 · pp. 26–33 Read article
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A Review of Combustion Modeling Techniques for IC Engines: CFD Simulations and Experimental Correlations
Abstract: For a long time, internal combustion (IC) engines have been the mainstay of power generating and transportation systems. However, a move toward cleaner and more efficient engine technologies has been spurred by stricter pollution restrictions and growing environmental concerns. In this context, combustion modeling has emerged as a critical tool for understanding in-cylinder processes and improving engine performance. This review focuses on the evolution and application of various combustion modeling …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 11, Issue 1, 2025 · pp. 13–20 Read article
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Performance Characterization of Couette FlowMembrane Module Through Computational FluidDynamics
Abstract: Membrane-based separation has been in rigorous applications in health services since the last fewdecennia. Dynamic Shear Enhanced Membrane Filtration Pilots (DSEMFPs) is a promising membranemodule. The first reported DSEMFPs was a Couette flow type module in 1985. It was used for collectingplasma from donors. This module consists of two concentric cylinders. The outer one is fixed while theinner one is rotating, having a membrane on the outer surface of it. …
Published in International Journal of Composite Materials and Matrices · Vol. 10, Issue 1, 2024 · pp. 1–5 Read article
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Innovative Financing Models for Scaling RenewableEnergy Projects in Africa: A Case Study onCrowdfunding and Blended Finance
Abstract: Africa’s energy industry stands at a pivotal moment, possessing plentiful renewable resources yet lacking adequate financing solutions to realize their potential. More than 600 million Africans still lack electricity access and conventional financing approaches, like government subsidies, donor funding, and bank loans, frequently fall short or are unreachable because of high risks, low investor trust, and poor regulatory conditions. Thus, innovative funding models are crucial to close the gap between …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 11, Issue 2, 2025 · pp. 50–54 Read article