This sounds very much like the Microcosmic Orbit. I use this technique when passing attunements, doing various types of energy work, as well as when I need a refresher.
Here are the steps that I use:
To perform the Microcosmic Orbit:
1. Begin by placing self in a meditative state.
2. Lock the Hui Yin and place tongue on soft palette behind the upper teeth.
3. Focus all attention at the Tan Tien/Hara.
4. Allow all of the energy to build up in the Hara until it feels very warm and “full.”
5. Now, send the energy out and down to the perineum and around and up through the spinal cord.
6. Hold the energy for a few moments at the crown chakra.
7. Now push the energy down the front of the body, making sure to pass through the Third Eye, Throat, and Heart Chakras before settling the energy back into the Hara/Tan Tien.
8. Repeat the process until it feels “complete.”
*Warning* Do not allow the energy to flow upwards on the front of the body. Make sure that you pass it around the back and up the spine.
Anyways, there it is.