  Space time fractional nonlinear evolution equations have been widely applied
for describing various types of physical mechanism of natural phenomena in
mathematical physics and engineering. The proposed generalized exp expansion
method along with the Jumarie s modified Riemann-Liouville derivatives is
employed to carry out the integration of these equations, particularly
space-time fractional Burgers equations, space-time fractional foam drainage
equation and time fractional fifth order Sawada Kotera equation. The traveling
wave solutions of these equations are appeared in terms of the hyperbolic,
trigonometric, exponential and rational functions. It has been shown that the
proposed technique is a very effectual and easily applicable in investigation
of exact traveling wave solutions to the fractional nonlinear evolution
equations arises in mathematical physics and engineering.
