Hisham El-shishiny El Shishiny

3D Pyramid Model to Predict Weathering – Talking Pyramids

This simulation was unusual because it had to handle large differences in scale among the various monuments on the Giza Plateau. To complicate matters, within the lower atmosphere the wind field must be resolved on very fine scales to achieve a high level of accuracy, said El-Shishiny.

To complicate matters, the problem size was much greater than the available computational resources. Ultimately, they ran the simulations on a cluster of 3 GHz Pentium IV processor workstations, each with 2 GB ram.

A model is only as good as its ability to make accurate predictions. That’s why the last slide is perhaps the most important: it shows pictures of the actual erosion of the Great Sphinx side by side with pictures that illustrate the model’s predictions for those same areas.

“The present work may give more insight on the effect of wind around the Giza Plateau when developing a global plan for conserving and protecting the site,” said El-Shishiny.

What next? Similar simulations that look at the wind-driven sand (which has completely buried the Sphinx several times throughout its history) are in the works, as well as research into the possibility of building a wall to reduce the wind’s influence on the Great Sphinx.

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