PROJECTS
Dynamic Contact Angle Model on Non-Homogenous Surface
As the droplet moves over a patterned surface and comes across a boundary with an extreme wettability difference, it gets attracted to the side with high wettability. During this transition, a massive jump in the contact angle is observed, which comes with a sudden jump in contact line velocity. This dynamic contact angle, when compared with Kistler’s model, does not predict the contact angle variation correctly in a non-homogenous surface. Through experimental methods, a model that predicts the dynamic contact angle is being developed. It also talks about the droplet's pinch-off and various regimes formed for fluids of different volumes and viscosity. Though it is a very fundamental study on droplet dynamics it also holds potential application in studies related to thin film deposition and printing technology.
Development & Validation of Systematic And Economical Approach to Design Thin Hyperloop Tubes
The economic viability of Hyperloop Technology as a high-speed transportation system has been insufficiently explored despite its significant potential. The conventional application of ASME Standards for design overlooks the nuanced challenges of global buckling in External Pressure Vessels. Addressing this research gap, my study thoroughly investigated the influential parameters of buckling and proposed a novel design methodology. Through a combination of numerical simulations and experimental validation, I have also developed a precise prediction model for critical buckling pressure at each design iteration. The implementation of this novel design methodology has enabled the engineering of an exceptionally slender Hyperloop tube, measuring 6mm in thickness and 2m in diameter. Moreover, comprehensive cost analysis has unveiled a remarkable 46% reduction in expenses when compared to the existing SpaceX Hyperloop tube.
Unsteady wake dynamics past a triangular cylinder at incidence with a downstream semi-circular cylinder at Re=100
A computational analysis has been carried out to investigate the forced convective flow and heat transfer past a triangular cylinder at incidence with a downstream semi-circular cylinder in cross-flow. Using a finite volume-based numerical method, simulations have been performed at a representative Reynolds number of 100 and various ranges of angles of incidences. Assuming air as an operating media (Prandtl number of 0.73), unsteady flow and forced convective heat transfer visualizations are shown in terms of streamlines, vorticity, and isotherm contours. Aerodynamic parameters and heat transfer are quantified for the operating ranges of parameter spaces. The simulation results show that one may enhance heat transfer by optimally choosing angle of incidences. The present results may act as a precursor in the design of advanced heat transfer devices of interest.
Design & Fabrication of Track for Hyperloop Transportation System
A meticulously designed, fabricated, and rigorously tested 30-meter track was made that showcases advanced features such as EMS levitation, contactless propulsion, and pneumatic friction braking for the 450kg pod. Extensive material exploration led to the creation of the inaugural prototype, where each track component underwent meticulous optimization to achieve optimal weight, minimize bending and torsional stress, and was precision-manufactured within specified tolerances, ensuring a state-of-the-art system that excels in performance and durability.
Computation Solution of Pennes Bio-Heat Equation in Human Arm Using Finite Volume Method
A thorough study on heat transfer in the human body has been of prime importance and a computational approach to simulate a human arm-like environment to quantify temperature and heat transfer is of prime importance and makes things easier to study heat interactions in human body. A computational approach to model heat transfer in human arm (muscle+skin) is being presented in this paper. A 2D structured mesh with an axisymmetric coordinate system has been used here to model it and has been solved using Finite Volume Method. The results obtained from this study shows how the temperature profile varies with change in the perfusion co-efficient of blood. It was observed that as the blood perfusion coefficient increases, the maximum temperature also increases. The maximum temperature is observed in the skin region where both metabolic heat generation and blood perfusion exist. Also, the increase in temperature in the muscle region is parabolic in nature, whereas it is linear in the skin region.