Mechanical Engineering
Mechanical Engineering
Lampung University
Lampung University
Research Interests:
Mechanical Engineering
Lampung University
Lampung University
Research Interests:
Mechanical Engineering
Lampung University
Lampung University
Research Interests:
Mechanical Engineering
Lampung University
Lampung University
Research Interests:
The study sought to investigate the unsteady MHD free convection flow past a vertical plate with thermal diffusion and chemical reactions have been discussed. The dimensionless governing equations are coupled and... more
The study sought to investigate the unsteady MHD free convection flow past a vertical plate with thermal
diffusion and chemical reactions have been discussed. The dimensionless governing equations are coupled and
non-linear. These equations for this investigation are solved analytically using two-term harmonic and nonharmonic functions by perturbation technique. Approximate solutions have been derived for the velocity,
temperature field, concentration profiles, skin-friction and rate of heat transfer. The obtained results are
discussed with the help of graphs to observe that the effect of various parameter like Grashof number (Gr),
modified Grashof number (Gc), Schmidt number (Sc), Prandtl number (Pr), magnetic parameter (M), chemical
reaction parameter(k), Sorret number (So) and heat absorption parameter(ϕ).
diffusion and chemical reactions have been discussed. The dimensionless governing equations are coupled and
non-linear. These equations for this investigation are solved analytically using two-term harmonic and nonharmonic functions by perturbation technique. Approximate solutions have been derived for the velocity,
temperature field, concentration profiles, skin-friction and rate of heat transfer. The obtained results are
discussed with the help of graphs to observe that the effect of various parameter like Grashof number (Gr),
modified Grashof number (Gc), Schmidt number (Sc), Prandtl number (Pr), magnetic parameter (M), chemical
reaction parameter(k), Sorret number (So) and heat absorption parameter(ϕ).
Research Interests:
Research Interests:
Coandă effect, which has been widely utilized in many engineering applications for circulation control, is here reviewed for the design of Coandă Micro-Air-Vehicles (MAVs). Based on the review, a basic spherical configuration is analyzed... more
Coandă effect, which has been widely utilized in many engineering applications for
circulation control, is here reviewed for the design of Coandă Micro-Air-Vehicles (MAVs). Based
on the review, a basic spherical configuration is analyzed to obtain the relationship between
relevant parameters to the lift that can be produced based on fundamental principles. The results can
be used for preliminary design purposes and are discussed in view of existing literature.
circulation control, is here reviewed for the design of Coandă Micro-Air-Vehicles (MAVs). Based
on the review, a basic spherical configuration is analyzed to obtain the relationship between
relevant parameters to the lift that can be produced based on fundamental principles. The results can
be used for preliminary design purposes and are discussed in view of existing literature.
Research Interests:
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Research Interests: Business, Management, Marketing, Business Administration, Mechanical Engineering, and 21 moreReligion, Music, International Relations, Media Studies, New Media, Research Methodology, Project Management, Conservation Biology, Molecular Biology, Mental Health, Digital Media, Accounting, Biotechnology, Human Resource Management, Biology, Social Media, Health, Public Health, Medicine, Business Management, and Kesehatan
The state of the art of flapping wing ornithopter MAV is reviewed to provide a comprehensive insight into the geometrical, kinematic and aerodynamic characteristics of flapping biosystems. Then a generic approach is carried out to model... more
The state of the art of flapping wing ornithopter MAV is reviewed to provide a comprehensive insight into the geometrical, kinematic and aerodynamic characteristics of flapping biosystems. Then a generic approach is carried out to model the kinematics and aerodynamics of ornithopter to mimic flapping wing to produce lift and thrust for hovering and forward flight, by considering the motion of a three-dimensional rigid thin wing in flapping and pitching motion, using simple approach, applied to a two- and quad-wing flapping ornithopter, which are modeled and analyzed to mimic flapping wing biosystem to produce lift and thrust for forward flight. Considering bird’s scale ornithopter, basic unsteady aerodynamic approach incorporating salient features of viscous effect and leading-edge suction are utilized. Parametric study is carried out to reveal the aerodynamic characteristics of flapping quad-wing ornithopter flight characteristics and for comparative analysis with various selected simple models in the literature, in an effort to develop a flapping wing ornithopter model. Further, numerical and flow visualization studies are carried out to simulate the aerodynamics of generic rigid and flexible flapping ornithopter wings. Two different solvers are utilized; FLUENT for fluid flow analysis and ABAQUS for structural analysis. The resulting coupled procedure retains second order temporal accuracy. The simulation of phenomena of aeroelasticity is performed with a FSI method.
Research Interests:
A conceptual design of a hybrid solar-electric car is under development with the objectives of providing an environmentally friendly battery based electric vehicle boosted by photovoltaic energy. A demonstrator vehicle has been... more
A conceptual design of a hybrid solar-electric car is under development with the
objectives of providing an environmentally friendly battery based electric vehicle boosted by
photovoltaic energy. A demonstrator vehicle has been developed by modifying existing vehicle, to demonstrate and evaluate its technical feasibility and performance.
objectives of providing an environmentally friendly battery based electric vehicle boosted by
photovoltaic energy. A demonstrator vehicle has been developed by modifying existing vehicle, to demonstrate and evaluate its technical feasibility and performance.
Research Interests:
Research Interests:
This article presents a method for splitting the total transmission ratio of coaxial helical gearboxes in order to get the maximum load capacity of gear sets. Basing on relation of torque on the driving gear shafts and regular contact... more
This article presents a method for splitting the total transmission ratio of coaxial helical gearboxes in order to get the maximum load capacity of gear sets. Basing on relation of torque on the driving gear shafts and regular contact resistance of gear units, a new model for calculation of partial ratios has been established.