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The CFD guys were generating solutions in a matter of days or even hours, and they wanted to verify their solutions with experimental data from the wind tunnels [2].
Rapid prototyping technology makes this concurrent study of air vehicle concepts via computer simulation and in the wind tunnel possible.

terrace exhaust section section temperature distribution air distribution winter air flow summer air flow ice rink equipment room pedestrian road rainwater sunshine Map 6：Nagano Hickies Stadium Double-layer Roof CFD Simulation Map 7：Image Diagram of the Air Flow Initiative Expansion of the Green Energy.

In order to quantify the performance loss due to roughness, several researchers Ferrer and Munduate [6]; Gregory and O’Reilly [7] have performed wind tunnel experiments and numerical simulations on wind turbine blades and airfoils.
Munduate, CFD predictions of transition and distributed roughness over a wind turbine airfoil.

Ferreira has studied the dynamic stall effect using PIV techniques and CFD simulations [7].

Nore et al. [20] indicates that the proportionality factor, called the incident rainfall coefficient, is a function of the terrain characteristics and of the building itself, and can be determined from experimental results or simulations with computational models of fluid mechanics (CFD).

[6] Mostafazadeh-Fard, Saman, Dissipating Culvert End Design for Erosion Control Using CFD Platform FLOW-3D Numerical Simulation Modeling, Journal of pipeline systems engineering and practice. 14 (2022) 04022064

Ramakrishnan, CFD simulation and experimental validation studies on hydrocyclone, Miner.

Wang [8] has verified using CFD simulation and tests that the emitter prototypes and emitter amplifier model designed based on Froude model law have similar pressure-discharge relationship and pressure distribution along the flow channel.

To use these techniques, it is necessary to know the force of the wind acting on the cross-sectional area of the aircraft in all directions, simulations with a CFD, or testing in a wind tunnel which is complex and difficult.

The blade obtained from this preliminary design method will then be analyzed using Computational Fluid Dynamics (CFD) which will be presented in separated paper.
Firstly, using these results, the numerical method is validated for simulation of the fluid flow around the propeller models; secondly, solving the flow fields in non-cavitating conditions is used as the initial condition for propeller cavitation simulations which will be presented in the next paper.
An elucidate the bursting phenomenon of tip vortex cavitation, with experiments in a water tunnel and numerical simulation were carried out with two propellers,(B3-20-50, B3-20-35) and different thrust coefficients and cavitation numbers.
W, “Numerical Simulation of Sheet Cavitation”,[C].3rd International Symposium on Cavitation Grenoble France, 1998
[7] InancSenocak, Wei Shyy, “Numerical Simulation of Turbulent with Sheet Cavitation”,[C].4th International Symposium on Cavitation, SessionA7.002, 2001