Two approaches exist to account for granular behavior. The thermal one considers the total entropy. which includes microscopic degrees of freedom such as phonons; the athermal one (as with the Edward entropy) takes grains as elementary. Granular solid hydrodynamics (GSH) belongs to the first. https://safeersappliancers.shop/product-category/bosch-ksv36aw4pg-serie-6-a-free-standing-fridge-346-litres-white/