title: particle system for cloud or smoke
body: <p>I am trying to make a simple particle system for cloud and smoke simulation using OpenGL and CUDA.</p>
  
  <p>How can I make the particles in the particle system behave as a real cloud or smoke would behave in some low turbulent winds?</p>
  
  <p>Some problems I'm having right now is:</p>
  
  <ol>
  <li>The particles clump together in a big ball</li>
  <li>The particles spread away into infinity</li>
  <li>The particles suddenly slingshot themselves away.</li>
  </ol>
  
  <p><strong>I've already done the rendering</strong> of the particles so I'm satisfied in that area.</p>