3/15/2024 0 Comments Bean animal in a center overflow![]() ![]() We use the equation to find that Velocity. The water has Velocity because gravity is pulling on it (it is falling). So, we first solve for the Velocity of the water. Let’s take a closer look at what Bernoulli said.ĭaniel Bernoulli’s Principle: Classic Bernoulli Equation The equation is the “Bernoulli Equation”. According to Bernoulli’s Law, the uncompressible fluid (water) will travel through an opening at a velocity(v) = sqrt (2*g*h) just like any other object FALLING out of a hole. One of the most common questions is “How much water will flow through a bulkhead?” We can use a fairly simple equation to answer that question. You will fine dozens of bulkhead flow calculators, but few of them are derived from anything more than anecodtal gueses or improperly applied physics. The driving force for writing this article is the high number of well intentioned, but poorly informed posts regarding different aspects of aquarium plumbing and flow rates. Terrible plumbing advice can be found in-bulk at just about any online aquarium forum. You may be thingking… “Physics? Who needs physics, this is an aquarium hobby bub?” Have you ever looked for a bulkhead flow rate calculator? Have you ever tried to figure out how much water your aquarium overflow can handle? That said, I know many of you would like to know a little bit more about the physics of water and how they govern different aspects of your aquarium. We will touch on some basic design principles such as Hartford Loops and baffles as well as some real world flow calculations using Bernoulli’s law and the basics of centrifugal pumps. Many aquarists get by without knowing the first thing about the physics of water. ![]()
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