# How to set a curved coastline

**URL:** <https://forum.croco-ocean.org/t/how-to-set-a-curved-coastline/7074>\
**Category:** dynamics-numerics-params\
**Created:** [December 23, 2024, 10:57am UTC](https://forum.croco-ocean.org/t/how-to-set-a-curved-coastline/7074 "2024-12-23T10:57:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Roy](https://forum.croco-ocean.org/letter_avatar_proxy/v4/letter/r/4da419/32.png) [@Roy](https://forum.croco-ocean.org/u/Roy)\
**Post date:** [December 23, 2024, 10:57am UTC](https://forum.croco-ocean.org/t/how-to-set-a-curved-coastline/7074/1 "2024-12-23T10:57:44Z")

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I am currently trying to run an idealized model for a bay-shaped coastline, but I encountered issues when setting the coastline. How can I adjust the degree of curvature of the coastline?

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**Author:** ![smaishal](https://forum.croco-ocean.org/user_avatar/forum.croco-ocean.org/smaishal/32/667_2.png) [@smaishal](https://forum.croco-ocean.org/u/smaishal)\
**Post date:** [December 23, 2024, 1:16pm UTC](https://forum.croco-ocean.org/t/how-to-set-a-curved-coastline/7074/2 "2024-12-23T13:16:26Z")

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@Roy It will be very case to case. sometime Dirichlet conditions (zero or fixed value) closed-case; sometime Neumann.  
grid refinement case increased just element or vertex size.  
Best,