Greenhouse Ventilation Considering Relative Humidity CFD Simulation, ANSYS Fluent Training

  • 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.
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Description

Optimal greenhouse ventilation, especially relative humidity, is essential for plant growth. Extreme humidity can cause microbial infections and poor air circulation, while extreme dryness can stress plants and limit photosynthesis. Thus, greenhouse ventilation systems must be properly engineered to regulate humidity levels for plant development. According to the reference paper entitled “ Numerical modeling of temperature variations in a Chinese solar greenhouse”, a CFD study is conducted to investigate crucial HVAC parameters in a greenhouse.

Greenhouse Ventilation Considering Relative Humidity CFD Simulation

Simulation Process

The primary design of the greenhouse is taken from the reference paper. It is almost a massive greenhouse with 20 exhausting fans on the north wall and a vent implemented on the south roof. Solar Ray Tracing model with DO radiation model is employed to apply China geography. It is late in the summer when the ambient temperature is 315K, and the ventilation system should satisfy the temperature and RH needed inside. Thus, Species Transport model is activated to track relative humidity. Indeed, solar radiation can only penetrate the greenhouse from the south roof and side walls due to the use of plastic material.

 

Post-processing

The installation of cooling fans could successfully satisfy our needs. Although the outdoor temperature is 315K, the thermal condition inside is cool enough and nearly 300K, while the relative humidity is 59%. It should be noted the ventilation system can be optimized. The animations display how the incoming airflow leaves the greenhouse due to inappropriate displacement. This may lead to a reduction in the number of fans, as well as a reduction in power usage and costs.

FAQ

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.

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.

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

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