Looking for airflow simulation templates? Sign up for SimScale and join the largest engineering simulation community in the world! | Page 61

abcaaaaaaaaaaaaaaaaaaaaaaaaadfadsf sdf dsd sdff s

TO DETERMINE THE EXACT SIZE AND BY USED OF CFD. IT IS USED FOR MEDICAL PURPOSES SINCE DUE TO COVID 19 PANDEMIC SO TO BE ABLE TO DESIGN A SUFFICIENT SIZE OF VVAVLVE

Identificación del recorrido del viento a través del proyecto

it is intended, to visualize the Airflow inside a lived-in cleanroom and its basement.

Die Simulation zeigt ein Segment eines existierenden Reinraums der ISO-Klasse 4 aus den 1980er Jahren. Schon ohne Geraete ist die Luftstroemung weit vom Ideal, senkrechte, turbulenzarme Strömung, laminar Flow, mit 0,45m pro s,  entfernt ist.  Ueblich ist es, Hilfsaggregate wie Vakuumpumpen, Thermostate und Schaltschraenke im Stockwerk unter dem Reinraum unterzubringen. Da dieses Stockwerk jedoch für die Abstroemung der Luft benoetigt wird, ist dort eine Raumhoehe von deutlich mehr, als den hier angetroffenen 2m, erforderlich. Einbauten im Bereich der Abstroemöffnung sorgen dafür, dass im Extremfall Luft aus dem Doppelboden wieder zurueck in den Reinraum stroemt.  

Der Wert für die Luftstoemungsgeschwindigkeit wurde fuer Reinraeume der alten Federal Standart Reinraumklassen 100 entspricht ISO-Klasse 5  und besser, in den USA in den 1960er Jahren willkuerlich auf  1 Mile per Hour  also 0,45 Meter pro Sekunde festgelegt.

Simulates airflow  from the duct  into a cabin environment

Central A/C installed at it's most optimal
Incompressible
A 100 year old brick house

Airflow simulation for an office building with courtyard

That seemingly interesting ceiling fan shape project was found in InShape public repository. I would like to compare it to standard triple blades ceiling fan which was simulated on Fluent 15 and reality checked by students in Sri Lanka. However that study is far from a good reference, hence I had to find a simple similar three-blades geometry and measure fan effects while using the same rotation speed.

It is the simulation for the 1st part of an intake for a car

Using Coanda effect is not a standard in drone design. I will evaluate its capacity on a model with minimum elements count (should be about 3).
However I have also a 'hidden agenda' linked to that study. This is related to ring shaped forms, created by rotating medium (this can be air or water dynamic structures). They resemble 'smoke rings', moving through the air with great stability. What is even more surprising is the fact, that air rings can be formed under water and dolphins do it and play with it for a long while (possibly few millions years).
When observing air rings created with simple boxes with a hole, one can notice the great velocity of generated ring, getting progressively bigger due to Magnus effect. Rotating energy of the ring is preserved for a long time and is not lost in a wake. If it would be the case, ring would stop advancing after few centimetres. 
In order to simulate that result to at least a small extend, I need to use Coanda effect, allowing flow to follow the curve of the body. Body will be a ring shaped object, tested with external 'momentum source'. Momentum source is a simplification of 'propeller' , which directs flow against expected vector of displacement. Momentum source is present in a hole of the ring. Few tests concerning its size and way of redirecting the flow will be simulated.

To  check if cooling can be done without pump

The goal is to investigate the behavior of an one-hour-design 3D printed glider while it gets actually printed.

116 minutes remaining before the wing sections are printed. Fin and fuselage still needs to be manufactured.
Hopefully some useful information will be acquired from this steady state incompressible CFD simulation before the hardware is all ready.
What is the speed range this plane can operate. Will this plane actually fly or it will be just a demo piece.

The glider is designed by some rules of thumb. 

Progress in the comments below!

UNV format TET mesh import and CFD internal simulation of house ventilation.

In this project we examined the Effect of Boundary Layers on the  NACA 0012 Airfoil. In-compressible fluid flow simulation is selected for the project. Free stream velocity is selected as 10 m/s having A.O.A  10 with the airfoil.

the intention of this project is to visualize the airflow inside of a cleanroom ISO4 and the influence of the equipment.                 Die Simulation zeigt ein Segment eines existierenden Reinraums der ISO-Klasse 4 aus den 1980er Jahren. Schon ohne Geraete ist die Luftstroemung weit vom Ideal, senkrechte, turbulenzarme Stroemung, laminar Flow, mit 0,45m pro s, entfernt ist.  Die Luftstroemung mit Equipment zeigt ein weiteres Projekt.

Rotating cylinder in a fluid creates lift, known as 'Magnus effect' which is proportional to stream speed and surface rotational speed of cylinder. I thought that it is a forgotten technology, remembering just experiments of Captain Cousteau with 'turbosail' in eighties. Then I discovered a modern ship construction with 'Sail-Rotors'. She is a German 'E-Ship 1' commercial cargo, equipped with four rotors of 4 meters of diameters. In 2013 Enercon company, the owner of the ship, published official document about performance of those rotating masts after navigating more than 150 000 miles.

The capabilities of rotating cylinders to produce lift were studied first at Langley NACA Laboratory. Mr Raid found that in appropriate conditions rotor can develop very high values of lift to drag ratio.

Such a simple form of propulsion system allows to test SimScale CFD tools quite easily and also to understand how lift / drag ratio relates to wind speed / rotation speed, as that relation is not linear. 

In my setup I created much smaller geometry: rotor diameter is 0.3 m and high 2.0 m. Sharp edges of cylinder were removed in order to avoid meshing overhead. Rotation is along Z axe, rotor position  starts at Z equal 0 and extends to 2 m.

Wind speed is setup to 10 m/s and rotor surface or peripheral speed to similar speed, about 50 rad/s. As rotating cylinder creates asymmetric air flow, walls instead of 'no-slip' were set to 'Custom' P and V  to 'Zero gradient', k and omega to 'Fixed values' appropriate to air. Basically those walls are 'transparent' and will not impact on rotating body.

I decided also to provide progressive rotation speed to rotor: on 120 seconds of simulation, rotor accelerates to final 50 rad/s for 50 seconds, using inversely parabolic slope. This allows to avoid a strong wake from body starting to rotate: That approach helps to maintain laminar flow and shorten the simulation time.

I wanted to intagrate my desings airflow.

This project important point of video shooting and very impressive photos click by drones camera

Project does contain examples of SimScale problems with features / simulations

A look on the flow of steam though a Plug

To see which wingtip design create the least vortex

airflow | SimScale Project Library | Page 61