Why does the sink go 'glu glu'

Have you ever noticed that when you turn on the faucet, the sink makes a peculiar sound, something like ‘glu glu’? You might be wondering what causes this strange noise. Well, fear not! Today, we will delve into the science behind this phenomenon and explain why your sink goes ‘glu glu’.

The ‘glu glu’ sound in the sink mainly occurs when water drains out rapidly. It is often associated with a partially blocked or clogged drainpipe. When you release water down the sink, it travels through the drainpipe and exits the sink. However, if there is some sort of obstruction in the drainpipe, such as accumulated debris or a buildup of soap scum, the water flow can become restricted.

When water encounters a narrow passage, such as a partially blocked drainpipe, it accelerates to maintain its flow rate. This acceleration can cause the water to create ‘glu glu’ sounds as it passes through the restriction. These noises are essentially the result of vibrations caused by the water moving through the constricted area.

The vibrations occur due to a phenomenon called cavitation. Cavitation happens when the pressure of a liquid falls below its vapor pressure, forming small vapor-filled bubbles. These bubbles collapse or implode when they travel to a region of higher pressure, such as when they reach the narrow section of the drainpipe. The collapsing bubbles create tiny shockwaves, leading to the ‘glu glu’ sounds.

To further illustrate this, picture water flowing from a larger pipe into a smaller one. As it enters the smaller pipe, the water speeds up due to the reduced space available. This rapid change in velocity increases the likelihood of the liquid reaching cavitation conditions. Consequently, the ‘glu glu’ sound is intensified in situations where the water flow encounters a more severe restriction.

Another factor that can contribute to the ‘glu glu’ sound is the type of sink you have. Some sinks are made of materials that tend to amplify the noise produced by water flow, such as stainless steel or cast iron. These materials are less capable of absorbing sound, thereby making the ‘glu glu’ sound more audible.

The frequency and intensity of the ‘glu glu’ sound can also depend on the design and condition of the drainpipe. If the drainpipe has rough or corroded surfaces, it can create additional turbulence and lead to noisier water flow. In contrast, a smoother drainpipe can minimize vibrations and reduce the ‘glu glu’ noise.

So, how can you prevent or minimize the ‘glu glu’ sound in your sink? Regular maintenance is essential. Clearing any debris, hair, or soap scum from the drain will help to keep the water flowing smoothly. Using drain guards or strainers can also prevent large particles from entering the drainpipe and causing blockages.

If the sound persists or the water flow is consistently slow, it’s advisable to seek professional help. A plumber can examine the plumbing system, identify any underlying issues, and provide suitable solutions.

In conclusion, the ‘glu glu’ sound in the sink is a result of water flow encountering a restriction, leading to cavitation and turbulence. Understanding the science behind this phenomenon provides insight into the potential causes and ways to prevent or minimize the noise. So, next time you hear your sink go ‘glu glu’, you can impress your friends with your newfound knowledge!