Energy Loss In Nozzle (Compressible Flow) CFD Simulation, ANSYS Fluent

Upon ordering this product, you will be provided with a geometry file, a mesh file, and an in-depth Training Video that offers a step-by-step training on the simulation process.
For any more inquiries regarding the product, please do not hesitate to reach out to us at info@CFDLAND.com or through our online support assistant.

Original price was: €155.00.Current price is: €95.00.

Categories CFD in Chemical Engineering, Fluid Mechanics CFD Simulation Tag Compressible Flow CFD

Description

As represented in the reference paper “ Numerical Analysis of Nozzles’ Energy Loss Based on Fluent, ” energy loss during the formation of a high-pressure water jet was investigated theoretically. The findings of the paper show that the high-pressure nozzle’s energy loss is not affected by the inlet pressure. Instead, it is affected by the nozzle’s angle, the diameter of the inlet, and the diameter of the exit. There will be a rise in the energy loss coefficient as the slope and inlet diameter gets bigger and the diameter gets smaller. This work gives a theoretical base for designing high-pressure nozzles in the best way and making them work better.

Figure 1: geometrical parameters of cylindrical nozzles

Simulation Process

The given geometrical parameters in Figure 1 are used to draw sketches in Design Modeler, followed by the production of the structured grid, which is discretized using ANSYS Meshing. 2D axisymmetric planar mode can drastically decrease the number of cells. On the other hand, the high-pressure flow asks for a compressibility assumption that is applied regarding the ideal gas density approach. Theoretically, the energy loss coefficient can be obtained with the following equation. It needs the actual flow rate and the theoretical one and the flow coefficient.

Theoretical flow:

$q_t=0.141r^2\sqrt{\Delta p}$

Flow coefficient:

$q=C_qq_t$

Energy loss coefficient:

$\zeta_n = C_q^{-2}-1$

Post-processing

The velocity magnitude curve shows that as the fluid moves through the nozzle constriction, its speed goes up by a huge amount. When the fluid enters the nozzle, it moves slowly (blue area), but it speeds up as it moves through the converging part (green to yellow area). At the throat of the nozzle, where the speed is highest (red area), it can hit 222 m/s. The fast-moving jet stays behind after the tip exits and slowly fades away as it mixes with the fluid around it. The big drop in pressure of 7064640 Pa (about 70 bar) across the tip shows that a lot of pressure energy is being turned into kinetic energy, which fits with the fact that the speed is going up. The fast flow is caused by this big difference in pressure, making the system lose energy. The big difference in speed at the walls of the nozzle shows that boundary layer effects are happening and that energy could be lost due to friction.

What makes your products different from others on the market?

We pride ourselves on presenting unique products at CFDLAND. We stand out for our scientific rigor and validity. Our products are not based on guesswork or theoretical assumptions like many others. Instead, most of our products are validated using experimental or numerical data from valued scientific journals. Even if direct validation isn’t possible, we build our models and assumptions on the latest research, typically using reference articles to approximate reality.

Is technical support available after purchase?

Yes, we’ll be here . If you have trouble loading files, having technical problems, or have any questions about how to use our products, our technical support team is here to help.

Which version of ANSYS Fluent do I need to load files?

You can load geometry and mesh files, as well as case and data files, using any version of ANSYS Fluent.

Reviews

There are no reviews yet.

Be the first to review “Energy Loss In Nozzle (Compressible Flow) CFD Simulation, ANSYS Fluent”