Free surface fluid and flow simulation

Free-surface modeling

In physics, a free surface flow is the surface of a fluid flowing that is subjected to both zero perpendicular normal stress and parallel shear stress. This can be the boundary between two homogeneous fluids, like water in an open container and the air in the Earth's atmosphere that form a boundary at the open face of the container. Computation of free surfaces is complex because of the continuous change in the location of the boundary layer. Conventional methods of computation are insufficient for such analysis. Therefore, special methods are developed for the computation of free surface flows. Source : https://en.wikipedia.org/wiki/Computational_methods_for_free_surface_flow

We can handle free_surface flow modeling and simulation with best quality in Solidworks.

 

Free-surface simulation - watercourse - by ARACo

 

Wave effect on offshore sea platform in Solidworks by ARACo

 

http://solidworks-iran.blog.ir/post/Solidworks-CFD-FEA-FEM-Project-On-line-Middle-east

 

https://araco.ir/en/products/fem-fea-cfd-fds-pyrosim-analysis-simulation

 

ARACo

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Parking (Car park) Ventilation by Jet Fan

Construction and operation of commercial and office complex are highly booming, according to the optimal use of existing spaces in major cities. Due to the compression of space in such complexes, parking’s are designed with the assumption to use the most space possible. With large numbers of cars in car-park and enclosed spaces, it will be certainly necessary to design a very powerful ventilation system.
Design and implementation of the ventilation system are necessary for enclosed parking and car park, because of vehicle density. During normal operation in a car park, vehicles produce pollutant gases like carbon monoxide and NOx may cause serious damage to people inside the parking lot. There is also another risk in car parks, which is the possibility of fire. Considering the enclosed area inside the parking’s, the Incidence of fire will produce deadly gases and a huge amount of smoke. According to this situation, parking ventilation systems must have the capability to control the smoke and deadly gases and provide the required time for people to escape from danger. 

Air flow diagram inside a parking 

The old method for parking ventilation was using ventilation ducts in the roof. This method causes many limits in design and operation and in a fire situation, ventilation was not good enough.
New technology in this field is the application of jet fans for normal ventilation and smoke extraction in case of fire in parking. In fact, this technology represents the most innovative and cost-effective alternative to traditional ducted mechanical extraction systems. Carefully managing the project in all its development stages, which requires the fundamental use of fluid dynamics calculation programs - CFD - and also ensures that the system is working correctly. The jet Fan system provides either normal ventilation and can also be provided for smoke extract in case of fire in the parking lot.
After the final design, the performance of the jet fan can be evaluated using CFD in normal operation. Also by using PyroSim and FDS software the function of the installed jet fan could be tested during a simulated fire.
PyroSim is a graphical user interface for the Fire Dynamics Simulator (FDS). PyroSim helps companies to create and manage the details of complex fire models.

Car park ventilation-CFD simulation result- Air speed plot

PyroSim and FDS are both using as main software to simulate the fire reaction in different environments like buildings, parking lot, Car park, Subway, Tunnel, Cinema, Commercial office complex, and …
Using PyroSim we could define smoke detectors and sprinklers in a 3D model, in order to examine the current design in case of fire with both software.

 

 

ARA Co

Car park (parking) Ventilation Design 

Tunnel ventilation design

Parking CFD projects 

Fire simulation project using PyroSim (FDS) for Tunnel, Parking lot, Stadium and ....

Website: http://araco.ir/en

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Tunnel ventilation and Industrial ventilation : http://tunnel-industrial-ventilation.blog.ir/page/Tunnel-Ventilation-design-Pyrosim-CFD-project

Heat transfer simulation and analysis

Heat transfer simulation

Transfer of heat from high temperature source to low temperature source is called heat transfer. The heat transfer can also take place within the system due to temperature difference at various points inside the system. The difference in temperature is considered to be ‘potential’ that causes the flow of heat and the heat itself is called as flux.

 

Heat transfer methods

In heat transfer fundamental, there are three modes of heat transfer between two objects: conduction, convection and radiation.

These methods have been described below:

Conduction: The transfer of heat between two solid bodies is called as conduction. It depends on the difference in temperature of the hot and cold body.

Convection: The transfer of heat between a solid surface and the liquid is called as convection heat transfer. Convection can also take place between two types of fluids like gas and liquid and also inside a fluid.

Radiation: When two bodies are at different temperatures and separated by distance, the heat transfer between them is called as radiation heat transfer. In case of the conduction and convection heat transfer there is a media to transfer the heat, but in case of the radiation heat transfer there is no media. The radiation heat transfer occurs due to the electromagnetic waves that exist in the atmosphere.

You can see all types of heat transfer modes in following picture.

Heat transfer analysis is one type of the CFD simulations. This type of CFD simulation is focused on calculating the rate of heat transfer inside and outside of a system.

Heat transfer simulations is a powerful tool to estimate the thermodynamic condition inside an industrial process and system. This type of CFD simulation can be used for:

PCB heat transfer simulation and analysis

Heat exchanger simulation and analysis

Reactor simulation and analysis

Electric board simulation

Engine heat transfer simulation

And …

 

ARA Co

Heat transfer simulation

Heat exchanger simulation

Convection heat transfer simulation

Website: http://araco.ir/en

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PyroSim and FDS Simulations

PyroSim is a graphical user interface for the Fire Dynamics Simulator (FDS). PyroSim helps companies to create and manage the details of complex fire models.
PyroSim and FDS are both using as main software to simulate the fire reaction in different environments like Building, parking lot, Subway, Tunnel, Cinema, Commercial office complex  and …
Using PyroSim we could define smoke detectors and sprinklers in 3D model, in order to examine the current design in case of fire with both software.
Meanwhile it is possible to link PyroSim results with Pathfinder software which is advanced movement simulation combined with high-quality 3-D animated results, gives reliable answers.

Fire simulation animation in parking using FDS

Using PyroSim (FDS based) software following simulations will be available :

Simulation of fire and smoke in parking and park lot

Fire simulation inside road, railway and metro tunnel

Fire and smoke simulation inside stadium, sport complex, residential complex, hotels, Theater, Cinema

Fire and smoke simulation inside airport ,subway station ,train station

Fire and smoke analysis in factory   

 

ARACo

Ventilation CFD projects (Tunnel, Parking lot, Stadium and ....)

Fire simulation using PyroSim (FDS) (Tunnel, Parking lot, Stadium and ....)

Website: http://araco.ir/en

Email: [e-mail] 

Cell phone: [phone] (Whats app - Telegram - IMO)

Office: 00982166561974 - 00982166129745

Ventilation design and simulation blog : http://tunnel-industrial-ventilation.blog.ir/

CFD Simulation and Analysis Project

CFD - Computational Fluid Dynamics - CFD Simulation and Analysis Project

In continuum mechanics, fluid mechanics to form one large branch. Fluid mechanics begins with the same principles of solid mechanics, but what distinguishes them from one another, is a fluid unlike solids are not able to withstand shear stress. Knowing this, it is planned equations for fluid motion analysis. These equations to respect both the British and the French mathematician called Navier-Stokes equations. CFD - Computational Fluid Dynamics solve the Navier-Stokes equation for the small size of the original model. In this way, the total desired volume is divided into very small volumes in operation meshing and after applying the boundary conditions, the equation is solved for all elements.

Computational Fluid Dynamics- CFD- in terms of the overall trend is similar to static and dynamic FEM analysis. Both methods are used to solve a much smaller element than the original model.

Today, with increasing computer processing speeds, CFD and FEM analyzes have found a special place in the design and failure analysis. Important things that can be calculated in Computational Fluid Dynamics:

Plot speed, temperature, and fluid pressure at any point of the model

Plots and counter the speed, temperature, and fluid pressure in the interior and exterior surfaces

Diagram of the fluid flow path

heat transfer charts and plots in the outer surfaces and boundary

Calculation of speed, temperature, and pressure at different levels and volumes

Diagram of the flow path

CFD and thermal simulation inside an shell and tube heat exchanger

Analysis and simulation of heat transfer and fluid that can be done with software such as Fluent, Ansys, and Flow works used in different parts of the industry, some of these include:

- Analysis and simulation of industrial ventilation and air conditioning - HVAC CFD

- Analysis and simulation of turbine and compressor

- Analysis and simulation of tunnel ventilation

- Analysis and simulation of the heat exchanger

- Analysis and simulation of chimneys

- Analysis and simulation of pumps

 

CFD Simulation freelancer

CFD and thermal simulation analysis projects

Fire simulation

PyroSim and FDS Simulation

Contact us: [e-mail] 

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Ventilation design and simulation blog : http://tunnel-industrial-ventilation.blog.ir

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