Circulation Preserving Motions

抄録

Two theorems concerning circulation preserving motions have been stated and proved. Two particular examples to illustrate them are also given. It is deduced that two circulation preserving motions in a Newtonian fluid when their sum is circulation preserving are mutually super posable but in a non-Newtonian fluid this proposition is true only if one more condition is satisfied. Similar results have been deduced for self-superposability also.