ANSYS-Fluent Tutorial || Spray simulation by using DPM model

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This video tutorial demonstrate step by step procedure for spray simulation by using discrete phase model (DPM) in ANSYS-Fluent. The present tutorial used a plain orifice injection type to simulate diesel spray. Before starting this tutorial it is recommended to watch the Geometry and mesh tutorial uploaded in this channel with the following link:
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Investigation of spray characteristics is always a challenging task due to its micro-scale parameter. Spray characteristics can be defined based on spray penetration length, spray cone angle and sature mean diameter (SDM), which is quite difficult to measure experimentally. The discrete phase model is one of the capable numerical models which can be used to investigate spray characteristics. In this video, detailed steps has been discussed for spray simulation with the use of discrete phase model.
Diesel discrete particle has been injected in a simple 2D axisymmetric geometry. Injection parameter involved orifice diameter, mass flow rate and vapour pressure, which can set with the use of Injection model.
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Опубликовано:

19 сен 2024

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Комментарии : 35

@EngineeringNature 3 года назад

Thank you

@janideepak2581 3 года назад

Informative video

@dharmikladhava3376 3 года назад

I got good results. Thanks

@EngineeringNature 3 года назад

Best regards

@ShyamPrasadVAtri 4 месяца назад

Hey i get a floating point exception following the exact tutorials. The reason is one of the values is being initialized to a very high value. Can you please suggest what could drive this?

@InvitationfromNature 2 года назад

Which model can give more better results?

@subratadutta7710 2 года назад

Sir, how did we specify that the fuel will be injected from a particular corner? In solution animation in mesh display the axis, wall are not showing after clicking display, what should I do?

@EngineeringNature 2 года назад

Will discuss with you shortly.

@pantaleonuo 3 года назад

Hi! Is there a way to contact you? So you can get me some advice in a experiment with the DPM model?

@EngineeringNature 3 года назад

You can contact us on mehulbambhania@gmail.com

@natrahkamaruzaman2375 3 года назад

Hi. May I know, is it possible to measure the spray angle in the fluent?

@EngineeringNature 3 года назад

No we can not measured spray angle with Fluent directly, but one can take the spray images with all dimentional information and can use any graphical tool for measuring the spray angle. Regards.

@easterraja8306 3 года назад

I follow those steps as per the video.. But i can't get the output.. Nothing is created inside my geometry.

@EngineeringNature 3 года назад

You should ensure unit ( meter and milimeter) during data inputs

@viduragamage6778 3 года назад

I wonder how can I simulate injection of diesel in to a flowing water channel

@EngineeringNature 3 года назад

You should unable the particle interaction with continues phase, which is water in your case. You can fill the domain with water prior to injection, through operation conditions. Regards.

@rachapatchaiyo5852 3 года назад

hello sir. I'm doubted this tutorial can activate interaction with continuous phase? and will it have a differect result? best regards.

@EngineeringNature 3 года назад

If you unable interaction of injected particle with the continue pahse , it definitely affect the spray pattern. I will try to post tutorial by considering that case to understand the difference 👍

@thippeswamyv2254 2 года назад

Yes, when you have interaction with continuous phase, particle velocity will change due momentum transfer with sorrounding fluid

@raje11223 3 года назад

Sir, I want to study penetration length at different pressures, if so how can one get the mass flow rate at different pressures?

@EngineeringNature 3 года назад

It is not that easy to get mass flow rate at particular injection pressure. (1) You can referred published work where they might be provide mass flow rate at given pressure. (2) You can run simple simulation , flow through orifice and calculate mass flow rate at that injection pressure. You can referred my tutorial fo find out mass flow rate through nozzle👍

@aviphi2441 2 года назад

How to add injection pressure and ambient pressure?

@aniket4528 7 месяцев назад

How can we set particular injection pressure?

@shramandas9819 Год назад

I am not getting single orifice atomizer in 2D. It is only available in 3D analysis. Help pls

@EngineeringNature Год назад

Use axi-symmetric boundary condition

@norbreck3017 2 года назад

How can check the pressure for this given system? and how to change it to obtain the variable results?

@EngineeringNature 2 года назад

The default pressure for fluid domain is to be considered 1 atm. You should use adapt region and patch pressure value during initialize the problem solution. Regards.

@norbreck3017 2 года назад

@@EngineeringNature okay got it So i need to assign pressure values in inlet boundary conditions isn't it?

@user-pu3ig7ts9l Год назад

sir Top wall you didint name it (like inlet outlet and axis ..why sir

@EngineeringNature Год назад

If we didn't define any boundaries it aromatic considered as Wall boundary conditions Regards

@SaravanaKumarT22PHD056 Год назад

@@EngineeringNature thank you sir..

@chillaragoutham6092 Год назад

Hello sir, instead of adding virtual plain-orifice model, I want make my own orifice geometry and estimate the droplet diameter using appropriate breakup model. Is there anyway to do this? I was trying VoF to DPM transition but I couldn't get result Thank you!