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Relevant bibliographies by topics / Unsteady simulation

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Academic literature on the topic 'Unsteady simulation'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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Journal articles on the topic "Unsteady simulation"

1

Torner, Benjamin, Lucas Konnigk, Sebastian Hallier, Jitendra Kumar, Matthias Witte, and Frank-Hendrik Wurm. "Large eddy simulation in a rotary blood pump: Viscous shear stress computation and comparison with unsteady Reynolds-averaged Navier–Stokes simulation." International Journal of Artificial Organs 41, no. 11 (2018): 752–63. http://dx.doi.org/10.1177/0391398818777697.

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Purpose: Numerical flow analysis (computational fluid dynamics) in combination with the prediction of blood damage is an important procedure to investigate the hemocompatibility of a blood pump, since blood trauma due to shear stresses remains a problem in these devices. Today, the numerical damage prediction is conducted using unsteady Reynolds-averaged Navier–Stokes simulations. Investigations with large eddy simulations are rarely being performed for blood pumps. Hence, the aim of the study is to examine the viscous shear stresses of a large eddy simulation in a blood pump and compare the r

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Wang, Zhi Gang, and Zhen Ning Zhang. "Modeling and Simulation of Unsteady Aerodynamics on a Morphing Wing." Applied Mechanics and Materials 427-429 (September 2013): 77–80. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.77.

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Modeling and simulation method of unsteady aerodynamics on morphing wings were investigated. The Unsteady Vortex Lattice Method is employed to model the unsteady aerodynamics of 3-D potential flow field surrounding the wing. An UVLM computer code was then developed and validated for numerical simulation. A morphing wing which changes its dihedral angle with constant angular velocity was investigated by the code, and the lift, induced drag, and pitching moment coefficients time histories were obtained. The results show that the UVLM code is an effective tool for simulations of unsteady aerodyna

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Adamczyk, J. J., M. L. Celestina, and Jen Ping Chen. "Wake-Induced Unsteady Flows: Their Impact on Rotor Performance and Wake Rectification." Journal of Turbomachinery 118, no. 1 (1996): 88–95. http://dx.doi.org/10.1115/1.2836611.

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The impact of wake-induced unsteady flows on blade row performance and the wake rectification process is examined by means of numerical simulation. The passage of a stator wake through a downstream rotor is first simulated using a three-dimensional unsteady viscous flow code. The results from this simulation are used to define two steady-state inlet conditions for a three-dimensional viscous flow simulation of a rotor operating in isolation. The results obtained from these numerical simulations are then compared to those obtained from the unsteady simulation both to quantify the impact of the

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Wang, Ziwei, Xiong Jiang, Ti Chen, Yan Hao, and Min Qiu. "Numerical simulation of transonic compressor under circumferential inlet distortion and rotor/stator interference using harmonic balance method." Modern Physics Letters B 32, no. 12n13 (2018): 1840021. http://dx.doi.org/10.1142/s0217984918400213.

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Simulating the unsteady flow of compressor under circumferential inlet distortion and rotor/stator interference would need full-annulus grid with a dual time method. This process is time consuming and needs a large amount of computational resources. Harmonic balance method simulates the unsteady flow in compressor on single passage grid with a series of steady simulations. This will largely increase the computational efficiency in comparison with the dual time method. However, most simulations with harmonic balance method are conducted on the flow under either circumferential inlet distortion

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Sznajder, Janusz, and Jerzy Zółtak. "APPLICATION OF AN EULER SOLVER TO SELECTED PROBLEMS IN FLIGHT DYNAMICS." Aviation 11, no. 2 (2007): 13–22. http://dx.doi.org/10.3846/16487788.2007.9635956.

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Several applications of a Euler solver with the formulation of the flow equations in the noninertial reference system with steady and unsteady flow analysis are presented. The steady‐flow applications include determination of aerodynamic derivatives with respect to angular velocity and analysis of vortical flow over a delta wing at high angles of attack with the determination of aerodynamic coefficients and analysis of vortex breakdown. The unsteady flow analysis is applied in the simulation of a rapid manoeuvre for the determination of unsteady forces. The results of this simulation are compa

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Hu, Le, Shu Jia Zhang, and Cheng Xu. "The Use of Steady Multi-Phase Position and Unsteady Computational Methods in the Numerical Simulation of Double-Suction Centrifugal Pump." Advanced Materials Research 181-182 (January 2011): 201–5. http://dx.doi.org/10.4028/www.scientific.net/amr.181-182.201.

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In order to compare the steady multi-phase and unsteady calculation in double-suction centrifugal pump application, this article simulates the internal turbulent flow of the 150S-50 double suction centrifugal pump. Numerical simulation uses realizable turbulence model, simulating with two methods of steady multi-phase and unsteady in 7 cases. Based on the numerical simulation, the head, shaft power, efficiency were calculated, the simulated performance curves of a double suction centrifugal pump is processed. The results show that: The results of unsteady simulation are closer with the experim

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Münsterjohann, Sven, Jens Grabinger, Stefan Becker, and Manfred Kaltenbacher. "CAA of an Air-Cooling System for Electronic Devices." Advances in Acoustics and Vibration 2016 (October 20, 2016): 1–17. http://dx.doi.org/10.1155/2016/4785389.

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This paper presents the workflow and the results of fluid dynamics and aeroacoustic simulations for an air-cooling system as used in electronic devices. The setup represents a generic electronic device with several electronic assemblies with forced convection cooling by two axial fans. The aeroacoustic performance is computed using a hybrid method. In a first step, two unsteady CFD simulations using the Unsteady Reynolds-Averaged Navier-Stokes simulation with Shear Stress Transport (URANS-SST) turbulence model and the Scale Adaptive Simulation with Shear Stress Transport (SAS-SST) models were

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Grioni, Mauro, Sergio Elaskar, Pascal Bruel, and Anibal Mirasso. "Numerical Simulation of Turbulent Flows using the SST-SAS Model." WSEAS TRANSACTIONS ON FLUID MECHANICS 19 (January 29, 2024): 24–39. http://dx.doi.org/10.37394/232013.2024.19.3.

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Turbulent flows play a crucial role in various engineering and scientific applications, and the accurate prediction of these flows remains a challenging task. This review explores the application of the Shear Stress Transport Scale-Adaptive Simulation (SST-SAS) turbulence model for solving incompressible turbulent flows, with a specific focus on unsteady wakes behind bluff bodies. Providing a concise overview of the model’s formulation and its advantages, this article highlights the efficacy of the SST-SAS model in simulating the intricate dynamics in different configurations of circular cylin

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Salehian, Saman, and Reda R. Mankbadi. "Simulations of rocket launch noise suppression with water injection from impingement pad." International Journal of Aeroacoustics 19, no. 3-5 (2020): 207–39. http://dx.doi.org/10.1177/1475472x20930653.

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The focus of this work is on understanding the effect of water injection from the launch pad on the noise generated during rocket’s lift-off. To simplify the problem, we consider a supersonic jet impinging on a flat plate with water injection from the impingement plate. The Volume of Fluid model is adopted in this work to simulate the two-phase flow. A Hybrid Large Eddy Simulation – Unsteady Reynolds Averaged Simulation approach is employed to model turbulence, wherein Unsteady Reynolds Averaged Simulation is used near the walls, and Large Eddy Simulation is used elsewhere in the computational

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Sharma, O. P., G. F. Pickett, and R. H. Ni. "Assessment of Unsteady Flows in Turbines." Journal of Turbomachinery 114, no. 1 (1992): 79–90. http://dx.doi.org/10.1115/1.2928001.

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The impacts of unsteady flow research activities on flow simulation methods used in the turbine design process are assessed. Results from experimental investigations that identify the impact of periodic unsteadiness on the time-averaged flows in turbines and results from numerical simulations obtained by using three-dimensional unsteady Computational Fluid Dynamics (CFD) codes indicate that some of the unsteady flow features can be fairly accurately predicted. Flow parameters that can be modeled with existing steady CFD codes are distinguished from those that require unsteady codes.

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Dissertations / Theses on the topic "Unsteady simulation"

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Smith, Thomas M. "Unsteady simulations of turbulent premixed reacting flows." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/13097.

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Stallard, Timothy J. "Simulation of unsteady viscous flow-structure interaction." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418130.

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The design of slender structures such as longspan bridges, masts, offshore risers and cables is strongly influenced by their response behaviour when subjected to unsteady loads due to wind, waves and current. Simulation of the behaviour of a viscous flow past a structural cross section is of great importance to engineers concerned with the design of such structures. Offshore engineers are concerned with estimating the magnitude of structural forces induced by the most severe storm-induced wave events. Numerous studies have been conducted in an effort to estimate the structural forces induced b

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Taflin, David E. "Numerical simulation of unsteady hypersonic chemically reacting flow /." Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/9967.

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Young, John Aerospace Civil &amp Mechanical Engineering Australian Defence Force Academy UNSW. "Numerical simulation of the unsteady aerodynamics of flapping airfoils." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Aerospace, Civil and Mechanical Engineering, 2005. http://handle.unsw.edu.au/1959.4/38656.

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There is currently a great deal of interest within the aviation community in the design of small, slow-flying but manoeuvrable uninhabited vehicles for reconnaissance, surveillance, and search and rescue operations in urban environments. Inspired by observation of birds, insects, fish and cetaceans, flapping wings are being actively studied in the hope that they may provide greater propulsive efficiencies than propellers and rotors at low Reynolds numbers for such Micro-Air Vehicles (MAVs). Researchers have posited the Strouhal number (combining flapping frequency, amplitude and forward speed)

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Sbardella, Luca. "Simulation of unsteady turbomachinery flows for forced response predictions." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341913.

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Prendergast, John Michael. "Simulation of unsteady 2-D wind by a vortex method." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612179.

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Davis, Mallory. "Numerical Simulation of Unsteady Hydrodynamics in the Lower Mississippi River." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1126.

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Alterations along the Mississippi River, such as dams and levees, have greatly reduced the amount of freshwater and sediment that reaches the Louisiana coastal area. Several freshwater and sediment diversions have been proposed to combat the associated land loss problem. To aid in this restoration effort a 1-D numerical model was calibrated, validated, and used to predict the response of the river to certain stimuli, such as proposed diversions, channel closures, channel modifications, and relative sea level rise. This study utilized HEC-RAS 4.0, a 1-D mobile-bed numerical model, which was cal

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Longo, Joel Joseph. "Unsteady Turbomachinery Flow Simulation With Unstructured Grids Using ANSYS Fluent." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1376875053.

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Mossi, Michele. "Simulation of benchmark and industrial unsteady compressible turbulent fluid flows /." [S.l.] : [s.n.], 1999. http://library.epfl.ch/theses/?nr=1958.

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Ke, Junhao. "Direct numerical simulation of an unsteady natural convection boundary layer." Thesis, University of Sydney, 2021. https://hdl.handle.net/2123/24382.

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The present thesis considers the flow mechanics of a natural convection boundary layer (NCBL) along an isothermally heated vertical wall. Large scale direct numerical simulations are carried out to investigate the laminar stability and the turbulent mechanics of the flow. In this study, a computationally efficient temporal framework, where periodic boundary conditions are imposed in the homogeneous directions, has been used to develop a temporally evolving (instead of a spatially evolving) flow. The stability properties of the laminar temporally developing NCBL, with Prandtl number 0.71, are

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Books on the topic "Unsteady simulation"

1

Srivastava, Rakesh. Simulation of unsteady rotational flow over propfan configuration. National Aeronautics and Space Administration, 1990.

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Janus, J. Mark. Unsteady flowfield simulation of ducted prop-fan configurations. American Institute of Aeronautics and Astronautics, 1992.

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Srivastava, Rakesh. Simulation of unsteady rotational flow over propfan configuration. National Aeronautics and Space Administration, 1990.

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4

Jacobs, Peter A. Numerical simulation of transient hypervelocity flow in an expansion tube. National Aeronautics and Space Administration, Langley Research Center, 1992.

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Jacobs, Peter A. Numerical simulation of transient hypervelocity flow in an expansion tube. National Aeronautics and Space Administration, Langley Research Center, 1992.

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Jacobs, Peter A. Numerical simulation of transient hypervelocity flow in an expansion tube. National Aeronautics and Space Administration, Langley Research Center, 1992.

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7

David, Gottlieb, and Langley Research Center, eds. Spectral simulation of unsteady compressible flow past a circular cylinder. National Aeronautics and Space Administration, Langley Research Center, 1990.

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8

Center, Ames Research, ed. Numerical simulation of unsteady incompressible viscous flows in generalized coordinate systems. National Aeronautics and Space Administration, Ames Research Center, 1988.

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9

Lawrence, C. Unsteady cascade aerodynamic response using a multiphysics simulation code. National Aeronautics and Space Administration, Glenn Research Center, 2000.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., ed. UNAERO, a package of FORTRAN subroutines for approximating unsteady aerodynamics in the time domain. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1987.

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Book chapters on the topic "Unsteady simulation"

1

Roos Launchbury, David. "Large Eddy Simulation." In Unsteady Turbulent Flow Modelling and Applications. Springer Fachmedien Wiesbaden, 2016. http://dx.doi.org/10.1007/978-3-658-11912-6_2.

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2

Benbouta, Najat, Pascal Ferrand, and Francis Leboeuf. "Simulation of 3D-Unsteady Internal Flows." In Unsteady Aerodynamics, Aeroacoustics, and Aeroelasticity of Turbomachines and Propellers. Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4613-9341-2_5.

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Martelli, Francesco, Elisabetta Belardini, and Paolo Adami. "Unsteady Flow Simulation of Turbine Stage." In Computational Fluid Dynamics 2002. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-59334-5_101.

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Singh, Mritunjay Kumar, and Priyanka Kumari. "Contaminant Concentration Prediction Along Unsteady Groundwater Flow." In Simulation Foundations, Methods and Applications. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05657-9_12.

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Lee, Chun-Hian, Yan-Qiu Chen, and Ning Zhou. "Finite Element Simulation of Unsteady Separated Flows." In Separated Flows and Jets. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84447-8_19.

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Kiris, Cetin C., Dochan Kwak, William Chan, and Jeffrey A. Housman. "Unsteady Flow Simulation of High Speed Turbopumps." In Computational Fluid Dynamics 2006. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-92779-2_122.

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Markofsky, Mark, Günther Lang, and Reiner Schubert. "Numerical simulation of unsteady suspended sediment transport." In Transport of Suspended Solids in Open Channels. Routledge, 2022. http://dx.doi.org/10.1201/9780203735152-31.

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Naicker, C. J., E. J. G. Arcondoulis, and James C. Tyacke. "Large-Eddy Simulation of Structured Porous Coatings." In Proceedings of the Cambridge Unsteady Flow Symposium 2024. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-69035-8_9.

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Shilnikov, Eugene V. "Parallel Program Complex for 3D Unsteady Flow Simulation." In Applied Parallel Computing. State of the Art in Scientific Computing. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-75755-9_88.

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Yang, Yongyi, and Zizhen Zhang. "The Simulation of Spatially Unsteady Seismic Ground Motion." In Atlantis Highlights in Engineering. Atlantis Press International BV, 2024. http://dx.doi.org/10.2991/978-94-6463-449-5_70.

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Conference papers on the topic "Unsteady simulation"

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Barber, James, Federico Porcacchia, Fiorenzo Posterivo, and Gianfranco Cito. "Development of a Comprehensive Simulation Framework with Pilot-in-the-loop for Tiltrotor Ship Operations Feasibility Assessment." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-260.

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This paper describes the development process of a comprehensive pilot-in-the-loop simulation framework suitable for preliminary feasibility, and on-deck handling qualities assessment of the Leonardo AW609 civil tiltrotor, when operating with the Italian Navy aircraft carrier Cavour. A pilot-in-the-loop engineering simulator was used for simulations in which steady, quasi-unsteady, and fully unsteady ship airwakes were created using Computational Fluid Dynamics (CFD) and experimental data. A dedicated analysis of the simulation environment provided a strong agreement with various pilot inputs a

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Madden, T. J., and J. H. Miller. "Unsteady gas laser simulation." In Proceedings. Users Group Conference. IEEE, 2004. http://dx.doi.org/10.1109/dod_ugc.2004.53.

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HU, CHIEN-CHUNG, C. LAN, and JAY BRANDON. "Unsteady aerodynamic models for maneuvering aircraft." In Flight Simulation and Technologies. American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-3626.

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Yao, Weigang. "Unsteady Aerodynamic Force Modeling via POD." In AIAA Modeling and Simulation Technologies Conference. American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-5685.

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Tang, Jing. "Numerical simulation of unsteady ship airwakes." In 2017 7th International Conference on Advanced Design and Manufacturing Engineering (ICADME 2017). Atlantis Press, 2017. http://dx.doi.org/10.2991/icadme-17.2017.3.

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Ananthan, Shreyas, James Baeder, Jayanarayanan Sitaraman, Seonghyeon Hahn, and Gianluca Iaccarino. "Hybrid Unsteady Simulation of Helicopters: HUSH." In 26th AIAA Applied Aerodynamics Conference. American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-7339.

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Kuwahara, Kunio. "Unsteady flow simulation and its visualization." In 30th Fluid Dynamics Conference. American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-3405.

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Greber, Isaac. "Molecular dynamics simulation of unsteady diffusion." In RAREFIED GAS DYNAMICS: 22nd International Symposium. AIP, 2001. http://dx.doi.org/10.1063/1.1407588.

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Adolfo, Dominique, and Carlo Carcasci. "Unsteady simulation of natural gas networks." In SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5138734.

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Bond, Derek, and Hamid Johari. "Numerical Simulation of Unsteady Axisymmetric Jets." In 3rd Theoretical Fluid Mechanics Meeting. American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-3081.

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Reports on the topic "Unsteady simulation"

1

Tsynkov, S. V. Artificial Boundary Conditions for the Numerical Simulation of Unsteady Electromagnetic Waves. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada454447.

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Marcum, David L. Computational Simulation of Unsteady, Viscous, Hypersonic Flow about Flight Vehicles with Store Separation. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada387492.

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You, Donghyun, William Bromby, and Adamandios Sifounakis. Large-Eddy Simulation Analysis of Unsteady Separation Over a Pitching Airfoil at High Reynolds Number. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada608653.

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Jameson, Antony, and Peter E. Vincent. High-Order Numerical Algorithms for Steady and Unsteady Simulation of Viscous Compressible Flow with Shocks. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada563587.

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Duque, Earl, Steve Legensky, Brad Whitlock, et al. Summary of the SciTech 2020 Technical Panel on In Situ/In Transit Computational Environments for Visualization and Data Analysis. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40887.

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At the AIAA SciTech 2020 conference, the Meshing, Visualization and Computational Environments Technical Committee hosted a special technical panel on In Situ/In Transit Computational Environments for Visualization and Data Analytics. The panel brought together leading experts from industry, software vendors, Department of Energy, Department of Defense and the Japan Aerospace Exploration Agency (JAXA). In situ and in transit methodologies enable Computational Fluid Dynamic (CFD) simulations to avoid the excessive overhead associated with data I/O at large scales especially as simulations scale

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Kokes, Joseph, Mark Costello, and Jubaraj Sahu. Generating an Aerodynamic Model for Projectile Flight Simulation Using Unsteady, Time Accurate Computational Fluid Dynamic Results. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada457421.

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Rahai, Hamid, and Assma Begum. Numerical Investigations of Transient Wind Shear from Passing Vehicles Near a Road Structure (Part I: Unsteady Reynolds-Averaged Navier-Stokes Simulations). Mineta Transportation Institute, 2021. http://dx.doi.org/10.31979/mti.2020.1933.

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In this research, the authors performed unsteady numerical simulations of a moving Ahmed body under a freeway overpass at different distances from the bridge columns in order to evaluate transient wind shear and the wind load on these columns. Results have shown that when the vehicle is at 0.75W distance from the bridge columns, an unsteady wind speed of up to 24 m/s is observed at the columns with a pressure coefficient difference of 0.9. Here W is the width of the vehicle. These results indicate with an appropriate system for harnessing these wind energy potentials, significant renewable ele

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Edoh, Ayaboe, Ann Karagozian, Charles Merkle, and Venkateswaran Sankaran. Investigation of Optimal Numerical Methods for High Reynolds Number Unsteady Simulations (Briefing Charts). Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada614100.

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Harmon, C. B., and William Dieterich. A 3-Degree-of-Freedom Flight Simulator Evaluation of Unsteady Aerodynamics Effects. Defense Technical Information Center, 1991. http://dx.doi.org/10.21236/ada241540.

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Sahu, Jubaraj, Frank Fresconi, and Karen R. Heavey. Unsteady Aerodynamic Simulations of a Finned Projectile at a Supersonic Speed With Jet Interaction. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada606268.

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