# How to get TIP4P-D

**URL:** <https://gromacs.bioexcel.eu/t/how-to-get-tip4p-d/185>\
**Category:** User discussions\
**Created:** [May 25, 2020, 5:04pm UTC](https://gromacs.bioexcel.eu/t/how-to-get-tip4p-d/185 "2020-05-25T17:04:21Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![katiejoyce12](https://avatars.discourse-cdn.com/v4/letter/k/7993a0/32.png) [@katiejoyce12](https://gromacs.bioexcel.eu/u/katiejoyce12)\
**Post date:** [May 25, 2020, 5:04pm UTC](https://gromacs.bioexcel.eu/t/how-to-get-tip4p-d/185/1 "2020-05-25T17:04:21Z")

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GROMACS version: 2020

I am new to GROMACS and I am trying to select the water model TIP4P-D for my simulation, although the default options do not include this model. How can I get this water model?

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**Author:** ![jalemkul](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/jalemkul/32/18_2.png) [@jalemkul](https://gromacs.bioexcel.eu/u/jalemkul)\
**Post date:** [May 25, 2020, 5:17pm UTC](https://gromacs.bioexcel.eu/t/how-to-get-tip4p-d/185/2 "2020-05-25T17:17:14Z")

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[https://mailman-1.sys.kth.se/pipermail/gromacs.org\_gmx-users/2016-September/108333.html](https://mailman-1.sys.kth.se/pipermail/gromacs.org_gmx-users/2016-September/108333.html)

Or perhaps the authors of the model have compatible files.

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<div class="post-metadata">

**Author:** ![katiejoyce12](https://avatars.discourse-cdn.com/v4/letter/k/7993a0/32.png) [@katiejoyce12](https://gromacs.bioexcel.eu/u/katiejoyce12)\
**Post date:** [May 25, 2020, 6:00pm UTC](https://gromacs.bioexcel.eu/t/how-to-get-tip4p-d/185/3 "2020-05-25T18:00:12Z")

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Is there a command that I can enter (ex. water- tip4p-d) to directly use this water model?

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<div class="post-metadata">

**Author:** ![jalemkul](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/jalemkul/32/18_2.png) [@jalemkul](https://gromacs.bioexcel.eu/u/jalemkul)\
**Post date:** [May 25, 2020, 6:11pm UTC](https://gromacs.bioexcel.eu/t/how-to-get-tip4p-d/185/4 "2020-05-25T18:11:08Z")

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No, there is not. You have to implement it yourself.