Dear all:

In gas-water CFD simulation of a stirred tank,I found that the torque of water is a positive value,such as 8 Nm,but the torque of the gas is a negative value,such as -3Nm. Then the total torque is 5 Nm by CFD. As we all know, with the air inducing,the torque or power falls. So,for gas-water system,the torque or power is reducing just because of the negative value of the gas torque? Do you meet the problem?