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Numerical Simulation Study of the Influence of Ceiling Materials to Roof Radiation Heat Exchange Songtao Hu, Feng Qi , Teng Xie,Xinxin Wang,Gang Wang and Guodan Liu Institute of Environmental&Municipal Engineering, Qingdao Technological University, Qingdao, 266033, China E-mail: qfsummit@163.com Keywords: CFD numerical simulation, Roof radiation heat exchange, Ceiling materials, Thermal physical properties Preface Abstract.
This article focuses on the study of the influence of ceiling materials to roof radiation heat exchange by CFD numerical simulation, which provides a theoretical basis for the choice of ceiling materials from the perspective of thermal properties.
Therefore, we select three kinds of ceiling materials: fiberboard, gypsum board and aluminum alloy plate, which are usually used in interior design, to study of the influence of ceiling materials to roof radiation heat exchange by CFD numerical simulation, which provides a theoretical basis for the choice of ceiling materials from the perspective of thermal properties.
The diagram of physical model Simulation results and their analysis C.
Radiative cooling calculation method based on the simulation of the ceiling. 2010 National HVAC Annual Conference

Abstract: Based on the theory of Fluid Dynamics CFD and Fluid analysis software Fluent，we accomplished the flow field simulation of internal speed and internal pressure of pneumatic oil mist atomizer.
Carrying on the flow field simulation of Internal speed ​​and Internal pressure by the theory of CFD and fluid analysis software Fluent, we also made comparative analysis between experimental data and flow field simulation, which has certain practical significance[2],[3].
Meshing[4] is the pretreatment of CFD simulation and can determine the computational precision.
The results of simulation are shown in Fig.3~Fig6, respectively.
The results of simulation are shown in Fig.9~Fig12, respectively.

This is found from the computational fluid dynamics (CFD) simulation of SERVCO fume cupboard using κ-ω turbulence model.
Introduction The computational fluid dynamics (CFD) simulation of SERVCO fume cupboard using κ-ω turbulence model suggested that recirculation region behind the sash is the potential contributor to the leakage of the contaminants due to its large size and its location near to outside air [1, 2].
In this paper, the effect of shape of baffle openings on flow distributions of a SERVCO fume cupboard will be presented as a result of computational fluid dynamics (CFD) simulation using κ-ω turbulence model.
CFD Set-up.
Fouad, CFD simulation of fractal-shaped orifices for flow measurementimprovement, Flow Measurement and Instrumentation, Vol. 36 (2014) 14-23

The different AOA (Angles of attack) 0̊, 6̊ and 10̊ are considered with Re = 3.6×106 for the supersonic flow simulations.
L A Schiavetta (2003) [10], carried out CFD simulation for transonic flow over the 65 degree sharp leading edge delta wing for M∞ = 0.85 and Re = 6×106 at 18.5 and 23 degrees.
The Reynolds number considered for the simulations was Re=3.6x106.
Fritz: Analysis of Transonic Flow on a Slender Delta Wing Using CFD, AIAA Paper 2006-3171. (2003) [11] N.
Allen: DELTA WING AERODYNAMICS – Requirements from CFD & experiments, Integrating CFD and Experiments, Glasgow, UK. (2003) [14] V.

The effects of varying tip gaps are studied using CFD simulations for overall pressure rise and flow physics of the tip flow at the design point and near the peak pressure point.
The effect of varying tip gaps are studied using CFD simulations for overall pressure rise and flow physics of the tip flow at the design point and near the peak pressure point.
A quick comparison between CFD results and rig test with 3% tip clearance rotor was carried out to establish a reasonable basis for detailed CFD analysis.
Fig. 1 Rotor performance comparison between rig test data and CFD simulations CFD Studies The generation of the rotor blade model and grid has been done using the software ANSYS Turbogrid© while the simulations were carried out using the commercial package ANSYS CFX©.
A mesh size of 3.1 million was chosen for the simulations after a grid independence study.

Stimulation parameters selection in CFD Parameter Value Kinematic viscosity 100mm2/s Height of oil 180mm Moving paddle rotational speed 300rpm The simulation results of viscous dissipation rate show in Fig.3, presented by viscous dissipation clouds.
The simulation and experimental results show consistent heating law.
CFD simulation can be used as a new means of stirring heating device design and research.
Simulation and Experiment Study of Flow Field and Dynamic Performance in Stirred Reactor [D].
FLUENT fluid engineering simulation and application examples [M].

Study on inner vortex in a hydrocyclone through numerical simulation ZHUO-LUN CEN 1,a, JI-GANG ZHAO 1,b and BEN-XIAN SHEN 1,c 1 State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, CHINA acenzhuolun@hotmail.com, bzjg@ecust.edu.cn (corresponding author), csbx@ecust.edu.cn Keywords: Hydrocyclone, CFD, Fluent, Inner vortex Abstract.
This work presented a computational fluid dynamics (CFD) simulation to predict and to evaluate the effects of inlet velocity and the diameter of overflow tube on the inner vortex.
The calculation was carried out using commercial CFD code Ansys Fluent 14.0.
The introduction of numerical simulation tool CFD (Computational Fluid Dynamics) can provide a better understanding of the rotational and high-turbulent flow in the interior of hydrocyclone2.
The entire geometry was meshed by sweep method of structural hexahedrons, which is accessible to faster and more accurate results in CFD.

In the past several decades, with the progress of computational fluid dynamics (CFD) and the development of computer technology, flow simulations based on the Euler/Navier–Stokes (N–S) equations become more and more capable of modeling non-linear and viscous effects more accurately.
In this paper, time marching analysis based on CFD-CSD method for a wing is used to capture the flutter boundary, in these simulations, the structure is given an initial velocity and the subsequent time evolution of the response is calculated to see whether it grows or decays.
Numerical Method Cfd Model and Its Solutions.
In the CFD numerical simulating, the governing equations are Navier-Stokes equations:
Simulation then proceeds to the next time step.

Using CFD simulation programs allows researchers to study and analyze the characteristics of fluid flow without creating the real physical model.
The lubricant and solid properties used in the CFD model are listed in Table 1.
The simulation results indicate the significant effects of the surface roughness on the fluid flow in the TEHL problem as presented in Fig. 3.
Specifically, the pressure obtained by the CFD model varies across the entire film thickness.
Spikes: CFD modeling of a thermal and shear-thinning elastohydrodynamic line contact.

For this purpose, a simulation setup consisting of a stationary 3D CFD simulation and a transient 1D simulation is developed.
In [15] the cooling of a vane type brake disc is optimised using transient 3D CFD simulation by Dalal.
In [17] the heat generation during drive cycles is evaluated by a 1D simulation and the airflow velocity around the brake disc by a 3D CFD simulation by Aramburu and Calvo.
On the other hand, the stationary 3D simulation using the CFD simulation software STAR-CCM+, which simulates the wheel assembly, including the braking system, in detail.
The aim of the 3D CFD simulation is a detailed study of the heat outflows from the brake disc in order to derive the transfer parameters for the 1D simulation.