# Different types of slope of channel | Fluid

## Different types of slope

There are different types of channel and different types of flow of fluid which are decided due to different types of slope. Artificial channel for flow of fluid should be designed with appropriate slope because over slope may cause extra cost to construct channel and less slope may cause scouring on the bed of channel.

Based on the depth of flow w.r. to the critical flow the slope of channel can be classified as

1. Mild slope
2. Critical slope
3. Steep slope
4. Horizontal slope    S0=0 (Zero)

#### 1. Mild slope.

If for specific discharge (Q), roughness value(n), slope of channel will vary depending on the depth of the flow. If the normal depth in the channel is greater than critical depth, the channel is said to be mild slope. The flow will be always sub-critical in mild slope. The bed slope will be less than critical slope.

#### 2. Critical slope

If the normal depth I the channel is equal to the critical depth, the channel is said to be in critical slop. The flow in the channel is always equal to critical. The flow in the channel is always equal to critical. The bed slope is equal to critical slope.

#### 3. Steep slope

If the normal depth of channel is less than the critical depth, the channel is said to be in steep slope. The flow is always super critical. The bed slope is greater than critical slope.

#### 4. Horizontal slope

Horizontal slope is such slope where bed slope is equal to zero.

If the bed slope is negative (S0<0) the slope in the channel is said to be adverse.