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Study of Simulation The Different Heating End for Thermal Environment in Atrium in Passive Buildings Sujuan Fu1,a,Shiyong Zhao1,b,Yang Jin2,c,Yixian Liu2,d 1Heibei Academy of Building Research , China 2 Tianjin Chengjian University, China aemail: fsj2503@163.com bemail:zhaoshiyongaa@163.com cemail:jinyangyouxiang@163.com demail:liuyixian123456@163.com Keywords: Heating, End, Thermal environment, Fluent Abstract.
This paper introduces Hebei Building science research and Development Center energy-saving design of passive public buildings by the simulation of soft Fluent, analysising the effect of thermal environment in atrium using fan coil and geothermal, geting the conclusion that the geothermal coil is more efficient than fan coil, Providing a new idea for the passive public building energy efficiency design.
Fig. 2 Building side view The project atrium and corridors in a large space for open, the underlying conditioned comfort requirements to meet the conditions of the area, the court upper must meet certain department of comfort, Because of the conventional design methods can not be a good solution for the air terminal design problem, this paper simulations of two different ends of the heating effect and thermal environmental analysis by CFD, to provide a theoretical basis for solving what kind of ends.
This paper is divided into two program to simulate the atrium temperature field in winter, respectively:fan coil units and radiant floor, simulation program table and boundary conditions are shown in Table 3.
Fig. 3 Fan coil heating temperature field Fig. 4 Radiant floor heating temperature field Summary In this paper, introduces building envelope, heat and cold sources for air-conditioning, air-conditioning system form and many aspects of the German passive low-energy saving technology building were discussed, and the application of CFD software to simulate different terminal of the winter heating atrium heating temperature field, comparative analysis of radiant floor heating used in large atrium energy savings in public buildings.

The CFD code used is Fluent 6.3.
Mufuta et al. [16] have solved the hydro dynamical equations using CFD method without considering eddy current loss.
Flow is numerically modeled in the channels by commercial CFD code Fluent 6.3.
Pepper,” Numerical simulation for natural convection in vertical channels”, International Journal of Heat and Mass Transfer 52 (2009) 4095–4102 [3] B.
Nowak, “Numerical Simulation and Experimental Validation of Coupled Flow, Heat Transfer and Electromagnetic Problems in Electrical Transformers”, Arch Comput Methods Eng (2009) 16: 319–355 [5] J.

Solidworks has been used to design and simulation as well.
In this report not shown everything, only a fraction to show simulation results.
Fig. 3, 4, 5, and 6 are examples of simulation results.
Considering the results of fisual of simulation models, further described the results of the change of gas pressure in the combustion chamber.
CFD Analysis of Gas Exchange Process in a Motored Small Two-Stroke Engine, J. of Applied Science 11(1) (2011) 36-45

The CFD problems over TM wings were solved based on steady and incompressible turbulent flow in Ansys-CFX solver.
The CFD study was highly focused on CL, CD and CM distributions on TM wings.
The details of Ansys-FSI computation and boundary conditions setups for CFD and CSD solver is found in the references [1,5].
Fully coupled FSI simulation method is summarized in Fig 1.
Figure 2 Fully coupled FSI simulation method Results and Analysis Lift Coefficient (CL).

Numerical simulation was performed usingAnsys-CFX software with the assumption of Newtonian fluid and laminar condition.
The simulation result showed that wall shear stress distribution increased after the fluid passing through the step.
The flow profile analysis from 3D Computational Fluids Dynamics (CFD) showed efficiency of wall shear stress profile reacting on the spherical cell model in the crescent trap [2].
The simulation was implemented in steady state with laminar condition.
The step height employed for the simulation is 1µm with Reynolds number of 500.

Computational fluid dynamic (CFD) analysis method is applied based on the theory of multiphase flow macroscopic continuum.
CFD analysis results show that the impact parts amplified the solid signal caused by the acoustic emission in multiphase flows.
CFD (computational fluid dynamic) analysis method is applied based on the theory of multiphase flow macroscopic continuum.
The simulation values are the same with theoretical analysis to verify the accuracy of the experiment.
The results of this experiment are in accordance with the acoustic emission energy model of solid phase particles, and are also consistent with the CFD simulation calculation results with the same sand particle size.

Isogai et al. [10] performed Navier-Stokes simulations of flow over a NACA 0012 aerofoil undergoing combined pitching and plunging motion at Re = 105.
For all simulations, steady state solutions are first obtained.
Simulation of Flow about Flapping Airfoils using Finite Element Incompressible Flow Solver, AIAA Journal, Vol. 39, pp. 253 - 260
Eighth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, CP 18
Proc. 9th Annual CFD symposium, CFD Division of Aeronautical Society of India, Bangalore

In their work, simulations have been done for different flow configurations and separation only vs. reactive cases.
The numerical simulations were based on the CFD method devised by Coroneo et al. [5, 6] which was developed in the realm of a finite volume CFD code but in this case, O2 is separated from air instead of H2 separation in their case.
The general-purpose commercial CFD code Fluent 6.3 was selected for the solution of the steady-state conservation equations adopting either the laminar or the turbulent formulation depending on the specific flow regime.
Despite the largest partial pressure differences relative to all other ITM simulations, the flux remains relatively low until the end of the reactor.
CFD modelling of inorganic membrane modules for gas mixture separation.

Zhao [3] used CFD simulation results to show that maximum airflow in a passive solar chimney is achieved using an optimal depth and height ratio of approximately 1:10.
Miyazaki [6] used a CFD simulation to analyze the effects of a solar chimney on office buildings in a Japanese climate.
The CFD simulation results showed that the maximum airflow rate was obtained with a height of 3.6 m and a width of 0.3 m or more.

Numerical Simulation and Model Test on Hydraulic Characteristics of Long-Distance Inverted Siphon Juan Li1,a, Zhenwei Mu1,band Lin Li1,c 1College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China ahome.hstlg@163.com,bxjmzw@sohu.com (corresponding author),clilin_xjau@163.com Keywords: Long distance, inverted siphon, model test, Numerical simulation.
Computational fluid dynamics of CFD is a branch of fluid mechanics by computer simulation, providing engineering and technical personnel practical engineering simulation platform for engineering and technical personnel [4].
Therefore, the standard model is only suitable for fully turbulent flow simulation.
The whole model includes the following three parts: import simulation section, equivalent loss alternative section, and export simulation section.
The computational fluid dynamics analysis-CFD software principle and application.