# Creating Topological Entities for the mesh **URL:** \ **Category:** Project Support\ **Created:** [July 15, 2016, 7:28pm UTC](https://www.simscale.com/forum/t/creating-topological-entities-for-the-mesh/32738 "2016-07-15T19:28:53Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![oscarcorripio](https://www.simscale.com/forum/user_avatar/www.simscale.com/oscarcorripio/32/6518_2.png) [@oscarcorripio](https://www.simscale.com/forum/u/oscarcorripio)\ **Post date:** [July 15, 2016, 7:40pm UTC](https://www.simscale.com/forum/t/creating-topological-entities-for-the-mesh/32738/2 "2016-07-15T19:40:31Z")
Hi Averma, I usually define inlets and outlets and the rest of the BCs after the mesh is done. The topological features created before the mesh are usually more for defining different mesh regions of different constrains. For a turbine blade you would want to do an external mesh and then you define the faces during the simulation designer section. I recommend you try some of the homeworks and tutorials to get more used to Simscale. Here’s a good post for that: > [@A Collection of SimScale Resources](https://www.simscale.com/forum/t/a-collection-of-simscale-resources/30801): > > For those of you who are new to SimScale (or new to our forum), I wanted to create a collection of resources to make getting started a little easier. Have a look around and happy simulating! What is SimScale SimScale is revolutionizing the computer-aided engineering sector by providing full access to engineering simulation in your web browser. Powerful cloud-based engineering simulation platform supporting solid mechanics, computational fluid dynamics, and thermal analysis. Ideal for collabor… --- _[View the full topic](https://www.simscale.com/forum/t/creating-topological-entities-for-the-mesh/32738)._