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Application of Zero Equation Turbulence Model for Numerical Simulation of Air Distribution in Train Compartment

Yang Peizhi,Gu Xiaosong

Strategic Study of CAE 2006, Volume 8, Issue 1, Pages 26-29

Abstract: cost much time for numerical simulation of air distribution in train compartment using k - ε turbulencemodel, so zero equation turbulence model is used for simulating airflow in train compartment.In this paper, zero equation turbulence model and k - ε turbulence model were applied for numericalmodel is very little.So zero equation turbulence model has the merit of simpleness and quickness, it will provide a simple

Keywords： air-conditioning zero equation turbulence model numerical simulation train

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Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Frontiers in Energy 2022, Volume 16, Issue 6, Pages 973-987 doi: 10.1007/s11708-021-0762-z

Abstract: Turbulence characteristics are estimated using particle image velocimetry (PIV) at different initialThe flame propagation of methanol/air is investigated at different turbulence intensities (u′=morpho-logy of turbulent expanding flames is wrinkled and the wrinkles will be finer with the growth of turbulence

Keywords： fan-stirred combustion chamber turbulence characteristics particle image velocimetry (PIV) methanol

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Numerical Simulation Research of Air Organization in Air Conditioned Hard-sleeper Compartment

Zhang Dengchun

Strategic Study of CAE 2004, Volume 6, Issue 9, Pages 66-72

Abstract: By k-ε turbulence model, the air fluid flow and heat transfer in air-conditioned hard-sleeper

Keywords： hard-sleeper compartment turbulence model air organization numerical simulation

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Enhace Independent Innovation Ablity of Paper Industry,Construct Innovation System of Paper Technology

Zhang Dengchun,Weng Peifen

Strategic Study of CAE 2007, Volume 9, Issue 11, Pages 80-86

Abstract: text-align: justify;">Based on steady state incompressible Reynolds-averaged Navier-Stokes equation, turbulencemodel, the three-dimension airflow and concentration fields in passenger car are calculated numerically

Keywords： passenger car turbulence model airflow field concentration field computational fluid dynamics

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Investigation of Turbulence Effects on the Aeroelastic Properties of a Truss Bridge Deck Section

Hoang Trong Lam, Hiroshi Katsuchi, Hitoshi Yamada

Engineering 2017, Volume 3, Issue 6, Pages 845-853 doi: 10.1016/j.eng.2017.10.001

Abstract: The objective of the study is to investigate the effects of oncoming turbulence on the flutter of suspendedlong-span bridges using a section model wind-tunnel test.performed on a truss bridge deck section with different oncoming turbulent properties involving reduced turbulence

Keywords： Flutter derivatives System identification Turbulence effect Buffeting response

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Numerical simulation of sudden-expansion two-phase flows with two-scale second-order moment particle turbulencemodel

ZENG Zhuoxiong, HAN Shoulei, ZHOU Lixing

Frontiers in Energy 2007, Volume 1, Issue 2, Pages 202-206 doi: 10.1007/s11708-007-0026-6

Abstract: A two-scale second-order moment particle turbulence model is developed, based on the concept of particlelarge-scale fluctuation due to turbulence and particle small-scale fluctuation due to collision.the experimental results and with those obtained by the single-scale second-order moment two-phase turbulencemodel.It is shown that the two-scale model is with higher calculating accuracy than the single-scale model.

Keywords： gas-particle single-scale second-order large-scale fluctuation second-order sudden-expansion

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Evaluation of the wind energy potential of two south west sites in Nigeria

Olaleye M. AMOO

Frontiers in Energy 2012, Volume 6, Issue 3, Pages 237-246 doi: 10.1007/s11708-012-0201-2

Abstract: Wind resource assessment is a crucial first step in gauging the potential of a site to produce energy from wind turbines. In this paper, the wind energy potential of Abeokuta (07°03'N, 03°19'E) and Ijebu-Ode (06°47'N, 03°58'E), two south west sites in Nigeria were examined. Twenty years (1990–2010) of monthly mean wind data from a 10 m height were subjected to two-parameter Weibull analysis and other statistical analyses. The results show that the average annual mean wind speed variation for Abeokuta ranges from 2.2 to 5.0 m/s. For Ijebu-Ode, it ranges from 2.0 to 5.0 m/s. The wind power density variation based on the Weibull analysis ranges from 4.26 to 24.51 W/m for Abeokuta and from 8.54 to 76.46 W/m for Ijebu-Ode. Ijebu-Ode was found to be the better of the two sites in terms of annual variation of mean wind speed.

Keywords： wind potential wind speed wind power density wind gust turbulence intensity Nigeria

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Stormwater treatment: examples of computational fluid dynamics modeling

Gaoxiang YING, John SANSALONE, Srikanth PATHAPATI, Giuseppina GAROFALO, Marco MAGLIONICO, Andrea BOLOGNESI, Alessandro ARTINA

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5, Pages 638-648 doi: 10.1007/s11783-012-0442-7

Abstract: A standard turbulence model is used to resolve flow, and a discrete phase model (DPM) is utilized toCFD results closely follow physical model results across the entire range of flow rates.

Keywords： and processes (UOPs) hydrodynamic separation filtration adsorption computational fluid dynamics (CFD) turbulencemodeling discrete phase model particle separation detention/retention basins clarification

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Simulating the air flow in the conveying pipe of the foreign fiber detection device

Ting CHEN, Lili WU, Ke WANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3, Pages 275-279 doi: 10.1007/s11705-009-0274-6

Abstract: The effects of the inlet air velocity on the air turbulence intensity and air velocity along the detecting

Keywords： product quality Chinese process turbulence intensity primary

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Laminar-to-Turbulence Transition Revealed Through a Reynolds Number Equivalence Article

Xiao Dong Chen

Engineering 2019, Volume 5, Issue 3, Pages 576-579 doi: 10.1016/j.eng.2018.09.013

Abstract:

Flow transition from laminar to turbulent mode (and vice versa)—that is, the initiation of turbulenceEven for pipe flow, predicting the onset of turbulence requires sophisticated instrumentation and/or> against the local velocity changes with increasing velocity determines the onset of turbulence115%">γ and velocity (nonlinearity) can qualify the source of turbulenceThis understanding will have an impact on the future large-scale modeling of turbulence.

Keywords： Local Reynolds number equivalence Flow transition from laminar to turbulent mode Universal law of the wall Pipe flow Plate flow Modeling

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Standard model of knowledge representation

Wensheng YIN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3, Pages 275-288 doi: 10.1007/s11465-016-0372-3

Abstract: methods include predicate logic, semantic network, computer programming language, database, mathematical modelintrinsic link between various knowledge representation methods, a unified knowledge representation modelAccording to ontology, system theory, and control theory, a standard model of knowledge representationThe model is composed of input, processing, and output.In addition, the standard model of knowledge representation provides a way to solve problems of non-precision

Keywords： knowledge representation standard model ontology system theory control theory multidimensional representation

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Zhang Zhengyan: Pre Training Language Model Integrating Knowledge (2020-4-3)

18 Apr 2022

Keywords：工程管理

State of the Art of Compartment Fire Modeling

Zheng Xin,Yuan Hongyong

Strategic Study of CAE 2004, Volume 6, Issue 3, Pages 68-74

Abstract: The relevant underlying physical assumptions are presented first and the conventional model performance

Keywords： compartment field model zone model network model FZN (field zone and network) model empirical model

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Elevated temperature creep model of parallel wire strands

Frontiers of Structural and Civil Engineering Pages 1060-1071 doi: 10.1007/s11709-023-0981-y

Abstract: analyze their creep behavior, this study experimentally investigated the elevated temperature creep modelThe parameters in the general empirical formula, the Bailey–Norton model, and the composite time-hardeningmodel were fitted based on the experimental results.By evaluating the accuracy and form of the models, the composite time-hardening model, which can simultaneously

Keywords： parallel wire strands experimental study elevated temperature creep model

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Impact of crude distillation unit model accuracy on refinery production planning

Gang FU, Pedro A. Castillo CASTILLO, Vladimir MAHALEC

Frontiers of Engineering Management 2018, Volume 5, Issue 2, Pages 195-201 doi: 10.15302/J-FEM-2017052

Abstract: In this work, we examine the impact of crude distillation unit (CDU) model errors on the results of refinery-wideWe compare the swing cut+ bias CDU model with a recently developed hybrid CDU model (Fu et al., 2016)The hybrid CDU model computes material and energy balances, as well as product true boiling point (TBPCase studies of optimal operation computed using a planning model that is based on the swing cut+ biasCDU model and using a planning model that incorporates the hybrid CDU model are presented.

Keywords： impact of model accuracy on production planning swing cut+ bias CDU model hybrid CDU model refinery feedstock