If you opened a textbook on vector calculus, you would see a sea of del operators (( abla )), flux integrals (( \oint_S \mathbfF \cdot d\mathbfA )), and curly paths (( \oint_C \mathbfF \cdot d\mathbfr )).
Applications in Engineering
What is Vector Calculus?
Divergence: Used to determine if a fluid is compressible by measuring the "flux" or net flow out of a volume. application of vector calculus in engineering field ppt hot