English to Russian Tech/Engineering Geology modeling software

Здравствуйте, коллеги!
Возник вопрос при переводе руководства пользователя; программный пакет моделирует поток подземных вод, газов и летучих соединений в недрах. Вопрос с термином Solution Mesh. Оставляю пока его как "Меш решений". В принципе, в руководстве объяснено, что это такое:

PetraSim divides the problem space into two sections. There is a Conceptual Model and a Solution
Mesh. The Conceptual Model defines all the high-level features of the model, such as a model
boundary, geologic layers, internal boundaries, and regions. The Solution Mesh defines cells and
connections that divide the conceptual model into pieces for the TOUGH simulator. The conceptual
model and solution mesh are further discussed in the topics, Conceptual Model and Solution Mesh.


7. Solution Mesh
PetraSim provides three types of solution meshes:
Solution Mesh
 Regular – cells are rectangular hexahedrons.
 Polygonal – uses extruded Voronoi cells to conform to any boundary and support refinement
around wells.
 Radial – represents a slice of an axisymmetric cylindrical mesh. This is based on the Regular
mesh, but it only allows 1 Y-division.

А вот что такое сам "меш"? И можно ли как-нибудь по-русски описательно передать этот "Меш решений"?