{"id":160682,"date":"2021-07-26T04:03:23","date_gmt":"2021-07-26T04:03:23","guid":{"rendered":"\/forum\/forums\/topic\/how-to-give-viscosity-and-surface-tension-under-material-properties-for-a-solid-melting-problem\/"},"modified":"2021-07-26T11:21:50","modified_gmt":"2021-07-26T11:21:50","slug":"how-to-give-viscosity-and-surface-tension-under-material-properties-for-a-solid-melting-problem","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-give-viscosity-and-surface-tension-under-material-properties-for-a-solid-melting-problem\/","title":{"rendered":"How to give viscosity and surface tension under material properties for a solid melting problem?"},"content":{"rendered":"
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For melting of a solid to liquid, as I understand FLUENT assumes the solid to be a fluid of high viscosity. If the Solidification\/Melting is "on", we can provide Solidus and Liquidus temperatures and FLUENT will add the Darcy force term.<\/p>\n

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  1. Now, under the materials properties, which viscosity should we provide? Is it the liquid viscosity we provide and FLUENT will automatically take a high viscosity for the solid phase? Or we provide a temperature dependent viscosity where we can give a high viscosity like 1000 in the solid phase and then the liquid viscosity after melting point.<\/li>\n
  2. Similarly, when using VOF, how to give surface tension coefficient between a gas and a solid? My solid melts after the melting point and I have only surface tension between the gas and the liquid phase. <\/li>\n<\/ol>\n

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