# Why is fluid not entering this hollow object?

Pouring water into a cup. The cup does not have a lid, but the following situation is shown. How can I solve this problem?

Here is the .blend file: https://drive.google.com/open?id=10zGUdGM0ecQkPkBijZ9jlZcaX9kja24Y Here is video that show the problem: https://youtu.be/mONqiAtMlwQ

• Volume Initialization of obstacle should be Shell for such simulation – Serge L Jan 26 '19 at 13:40
• @SergeL You should make that as an answer, instead of a comment, as it does solves the problem. – Sava Jan 26 '19 at 17:08