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Finite element analysis on the product side, mold flow analysis on the mold forming side, providing engineering consulting and software sales for manufacturing enterprises, with rich project experience and knowledge accumulation in fields such as new energy vehicles, high-tech, medical care, and industrial equipment.

Application Value of Water-crossing Analysis Simulation: 

  After heavy rain, there will be a lot of water on the road surface. It is very common for vehicles to drive through water, which can easily cause water to enter various electrical circuit interfaces and sockets. Water seepage may occur on the firewall, having a relatively large impact on the engine and lubrication system and threatening the lives of drivers and passengers. Therefore, the water-crossing ability of vehicles is also an important indicator for measuring vehicle quality. Besides conducting water-crossing analysis through experiments, it is becoming more and more common to use finite element software to conduct CFD water-crossing analysis and simulation on vehicles.

Simulation Scenarios of Water-crossing Analysis Simulation

1. It can simulate vehicles driving through water at different speeds and water depths.

2. It can simulate vehicles entering and exiting water holes through inclined ramps.

3. Predict the water wave patterns in front of and around the vehicle under different water-crossing scenarios.

4. Predict the wetting conditions of key electrical and electronic components.

5. Predict the water intake situation in the intake system and components under the engine hood.  

Application Cases of Vehicle Water-crossing Analysis Simulation:

   Vehicles conduct water-crossing analysis and simulation tests to ensure the functional integrity of components under the engine hood under different vehicle speeds and water depths. This simulation can simulate the tests of vehicles entering and exiting water pools through straight or inclined roads.

The following are the analysis and simulation results 

The fast and powerful multiphase flow solver can accurately capture the water-crossing phenomena and waveforms in front of the vehicle. It can also quantify the water level and volume in the compartment under the engine hood, as well as the wetting conditions of key components.

When vehicles wade through deep water, the following main problems may occur:

1. It is easy to cause water to enter various electrical circuit interfaces and sockets.

Nowadays, vehicles are becoming more and more electronic, and the circuits are particularly complicated. Generally, no problems can be seen immediately after the vehicle wades through water, but after a period of time, circuit oxidation problems may occur at the water-entered positions.

2. Water seepage will occur on the firewall.

When the vehicle passes through flooded roads, a large amount of water will impact the firewall inside the vehicle. Due to the rapid water flow and high pressure, water seepage will occur on the firewall after a period of time.

3. It has a relatively large impact on the engine.

For example, environmental water may cause electrical short circuits; water entering the intake pipe may cause water to enter the cylinders and enter the engine body to dilute the lubricating oil; the water flowing when wading through water has a cooling effect on the engine body.

4. It has a relatively large impact on the lubrication system.

The oil pan is located at the bottom of the engine and first contacts with water when wading through water. As the water depth increases, part or all of the oil pan is submerged under the water surface. The high-temperature lubricating oil exchanges heat with water through the shell wall, resulting in a decrease in the temperature of the lubricating oil, an increase in viscosity, poor lubrication, an increase in friction loss, and an increase in fuel consumption rate.

5. It threatens the lives of drivers and passengers.

In the case of heavy rain and large water flow in low-lying areas, it may cause the vehicle to stall and the control system to malfunction, further threatening the lives of drivers and passengers.  

Brief Introduction to the CFD Water-crossing Analysis Simulation Process:

Use HyperMesh pre-processing to process the fluid model, and conduct water-crossing analysis on a certain type of vehicle using the fluid analysis method.

Use the Fluent finite element software to conduct numerical calculations for vehicle water-crossing analysis simulation, establish a two-phase convection model using the volume of fluid method, and conduct calculation and simulation.

Charging Standards:

  The quotation is calculated based on the difficulty of specific projects. Since CAE analysis involves a wide range of aspects, there are differences in projects and various testing items, involving different types of finite element analysis and differences in their difficulty coefficients, so it is impossible to unify the standard project prices. Guided by customer needs, we will formulate and recommend the most suitable product solutions for each customer. We attach great importance to integrity, pursue the highest quality, serve wholeheartedly, and win trust.