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Particle Tests
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Tests on particle motion. Uses tracer particles.


test_particle-x
===============

Tests particle motion in x direction only

test_particle-y
===============

Tests particle motion in y direction only

test_particle-xy
================

Tests particle motion in x and y directions together

test_particle-circle
====================

Tests circular particle motion

test_particle-amr-static
========================

Tests static particle in adaptive mesh refinement


test_particle-amr-dynamic
=========================

Tests dynamic particle in adaptive mesh refinement