Hello everyone. I'm a freelance engineer working with a start-up on designing a washer dryer combo. I'm wanting to calculate drying time with a given volume of clothes (and type of fablic), starting water saturation, drum volume, and hot air flow. Is there any way to hand calculate this, or would I need to use something like ansys? I'm also wondering what engineering science route to go for the calcuation; thermo, fluid mechanics, heat transfer? TIA for any feedback.