According to the dictionary, the word “tile,” when used as a transitive verb means to cover with tiles or to install drainage tile in a specific area to aid in the velocity of water flow.
When tile is used as a noun it can also mean several different things, such as: a: a flat or curved piece of fired clay, stone, or concrete used especially for roofs, floors, or walls and often for ornamental work b: a hollow or a semicircular and open earthenware or concrete piece used in constructing a drain c: a hollow building unit made of fired clay or of shale or gypsum. A tile can also be a type of hat, especially a high silk hat. Last but not least a tile can be a thin piece of material like cork, linoleum, or rubber used especially for covering floors or walls. When playing a game a tile is a thin piece resembling a ceramic tile that usually bears a mark or letter and is used as a playing piece in a board game Scrabble.
I think the term you are looking for is a “flow tiles.” This is a type of system set up to control the velocity of a water flow and could very well be included in the article you read. I hope this helps.