Vortex generator (VG) was placed at the upstream of jet orifice. Nano-particle plane laser scattering system(NPLS) and particle image velocimetry(PIV) technology were employed to observe the flow field of transverse jet on condition of VG with five different configurations. Penetration depth of transverse jet was extracted and compared. Penetration depth was enhanced 30%-60% higher by placing VG at the upstream of jet orifice. Sensitivity analysis of VG configuration parameters

jet to mainstream momentum ratio and distance between VG and jet orifice was proceeded. It turns out that jet to mainstream momentum ratio plays a dominate role in jet penetration depth. Those parameters were optimized based on target function. It is revealed that the top value of dimensionless jet penetration depth is 12.68 while VG half cone angle is 36°

VG gradient angle is 6°

dimensionless distance between VG trailing edge and jet orifice is 38.8 and jet to mainstream momentum ratio reaches 10.6.