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  3. Try adding layers with smooth transition and growth ratio. I have not used Ansys much but if it was the case in Hypermesh, mesh density can be easily achieved by splitting the surfaces into smaller parts and chosing smaller mesh sizes for near to boundary locations. Another feature in Ansys, I think you can use is adding sphere of influence with proper values. Hope this helps
  4. still waiting for comments Em: farsideofourmoon@yahoo.com The SeaEngine is just using the lifting force of several lifting forces together. It is not creating more energy; it is simply combining the force of multiple forces into one. The torque of the machine is greatly enhanced. Can this machine produce useful work? Principles to run the machine These are a few basic principles [1] an enclosed container (X) of air submerged in water has a lifting force (Y) equal to the volume of the water displaced minus the weight of the container; [2] connecting multiple containers one on top of the other creates a combined lifting force of (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y) Which is a greater lifting force than (Y); [3] the energy needed to fill one container is equal to the energy needed to sustain the combined lifting force of the 10 (ten) containers referenced above; Formula used (ATM/V1) X V1 = bubble size Output of this machine is 118,428 pounds of lifting force moving at 33 feet per second at any one moment in time The SeaEngine is just using the lifting force of several lifting forces together. It is not creating more energy; it is simply combining the force of multiple forces into one. The torque of the machine is greatly enhanced. I came up with an idea that could possibly produce more useful energy than is required to keep the system running & no it is not a perpetual motion machine. The output is electric and that is why I am introducing this idea here. SeaPower description Attached is a diagram that details a new energy generating power source using the expanding rise of air underwater as a lifting force. This is the same principal that keeps a boat afloat. A cubic foot of air under water has a lifting force of 67 pounds. A ship/boat that weighs 2,000 pounds must displace (2,000/67)=29.85 cubic feet of water to stay afloat. In the diagram, there is a vertical row of balloons. The lower balloon or inverted umbrella; is injected with 40,000 cubic feet of air compressed to 15 ATM resulting in a volume of 2,666.66 cubic feet of air. When the first balloon rises 99 feet to 12 ATM it will expand to 3,333.33 cubic feet As each balloon rises it will expand from 2,666.66 feet until it reaches the surface with a volume of 40,000 cubic feet. There are fifteen (15) balloons each tied together in a vertical row. The combined lifting force of the 15 balloons is 118,428 pounds of continuous lifting force. In order to maintain this lifting force, the lowest balloon must be injected with 40,000 cubic feet of air compressed to 2,666.66 cubic feet. When it rises a new balloon replaces it in a circular motion, as the diagram attached shows. Principles to run the machine [1] an enclosed container (X) of air submerged in water has a lifting force (Y) equal to the volume of the water displaced minus the weight of the container; [2] connection multiple containers one on top of the other creates a combined lifting force of (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y)+ (Y) Which is a greater lifting force than (Y) [3] the energy needed to fill one container is equal to the energy needed to sustain the combined lifting force of the 10 (ten) containers referenced above minus the energy needed to keep it running. That is why I am here. I need to calculate: [1] the electrical power of a pulling force of 118,428 foot pounds can produce. [2] the electric power needed to compress 40,000 cf down to 2,666.666 cubic feet [3] the speed of the rising balloons Comments please
  5. I need Auto Cad self learn book or instructions manual.
  6. PERSONAL PROFILE A diligent, dedicated, humble and competent Project & Maintenance Engineer, with over 10 yearsOSHEMUGHEN JULIUS.pdf experience in the Oil & Gas, Steel, Marine logistic, Procurement & Supply industries in Nigeria. Possessing a proven track record of preparing and executing project plans and programmes, ensuring that work is carried out in accordance with the companies procedures. Able to ensure timely, safe and cost effective design and implementation during the life cycle of projects from conception to conclusion meeting customer satisfaction. Currently looking for a suitable Project & Maintenance Engineering or consultant position with a forward thinking employer.
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  8. The machining of ISO N materials such as wrought aluminium alloys and cast aluminium alloys or copper presents a challenge for tools. Walter is launching a product line developed especially for this with the MC267 Advance solid carbide milling cutters. The universal milling cutters with centre cut and diameter of 1 to 20 mm are suitable for a wide range of applications, including sectors involving micromachining operations, such as the electronics industry. With two or three flutes, they can be used on machines with a different performance spectrum, for roughing as well as semi-finishing and finishing. The combination of geometry (45° helix angle) and low-vibration micro geometry enables a high level of stability and process reliability.
  9. Which company is manufacturing trains for India's first Regional Rapid Transit System (RRTS)?
  10. I am Cadet Ankit Anand. I am a future Marine Engineer. I am currently majoring B.Tech(Marine Engineering) from Indian Maritime University, Kolkata (world's 2nd leading Institute in the field of marine engineering). 

    Here is my LinkedIn profile link

    https://www.linkedin.com/mwlite/in/ankitanand01

  11. GKN Aerospace is leading the H2JET national partnership programme in Sweden, which aims to develop technical solutions for three key engine subsystems for medium-range civil aircraft using H2-propulsion. Hydrogen is projected to play a crucial role in aviation's decarbonization strategy because it can efficiently power aircraft while producing only water as a by-product. H2JET focuses on direct combustion, whereas GKN Aerospace's 'H2GEAR' venture, which was launched earlier this year, focuses on generating onboard electrical power via a fuel cell.
  12. Mesh generation is a vital step for any simulation be it structural, NVH Or CFD. It involves breaking the entire model or domain (which is the geometry) into small elements with certain qualities. A more technical term for this process would be discretizaion. Why would you need this in the first place! Well any geometry can be broken into infinite number of parts and if you are going to apply governing equations on them for solving a case, solver would go crazy as it'll have to solve them for Infinite number of inputs. This is tackled by dividing the geometry into a finite number of chunks or pieces called elements. And this process is termed as meshing. There are basically two types of mesh used ; 2D or shell mesh and 3D or solid mesh. Now a simple guess would be 2D mesh can be used for 2D geometries and 3D for solid geometry right! But in actual practice for certain 3D components you can very well go for shell mesh or 2D mesh. Actually for plastic and sheet metal components which are having a uniform thickness a mid plane is extracted out of the solid model. Mid planing or mid surface generation is a very delicate process in itself, it requires a CAE engineer to have basic grasp of CAD modelling like surface generation, boolean operations etc. After that the crated mid surface is meshed with 2D elements and thickness is assigned to them in such a way that half of the value goes in upper side and half in the lower side. This approach saves precious resources in carrying out the simulation as 3D mesh is always heavier for the solver than a 2D or shell mesh.
  13. Dear colleages, I am dealing with rope friction and the so-called Capstan equation. Situation: A rope wraps around a cylinder with a wrap angle. It depends on the input force. There are very comprehensive approaches by other colleagues, where the friction value depends on the normal force or pressure. They are presented in the following publications. Capstan equation including bending rigidity and non-linear frictional behaviour", Jae Ho Jung, Ning Pan, Taewook Kang, doi: 10.1016/j.mechmachtheory.2007.06.002 Equation 11 " Constraint ability of superposed woven fabrics wound on capstan " , Junpeng Liu Murilo Augusto Vaz Anderson Barata Custódio, doi: 10.1016/j.mechmachtheory.2016.05.014, equation 8. Both equations have the problem described in the illustrations. If the incoming force becomes 0, then an outgoing force other than 0 will still be output. This is not possible if rope stiffness is neglected. Symbols for Jung et al.: Incoming force T.1=0 kN. If the wrap angle theta and friction coefficient alpha are large enough, the outcoming force T.2 is already almost 0.8 kN. Symbols for Liu et al.: Incoming force T.0=0 kN. If the wrap angle theta and friction coefficient a.1 are large enough, T.1 is already almost 3 kN. Does anyone know the problem? Best regards Paul Schumann
  14. Nanotechnology-based startup-Log 9, On 14 July, announced the trials of the new rapid charging EV batteries in several cities to bring down the charging time from several hours to only 15 minutes and making the EVs go for 60 Km in one charge. The startup aims to equip the two-wheelers and three-wheelers with rapid charging batteries to attaining a global vision of the ‘Clean Energy Transition.’
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  16. particulate air filter is a device composed of fibrous, or porous materials which removes solid particulates such as dust, pollen, mold, and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone.Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines. Some buildings, as well as aircraft and other human-made environments (e.g., satellites, and space shuttles) use foam, pleated paper, or spun fiberglass filter elements. Another method, air ionizers, use fibers or elements with a static electric charge, which attract dust particles. The air intakes of internal combustion engines and air compressors tend to use either paper, foam, or cotton filters. Oil bath filters have fallen out of favour aside from niche uses. The technology of air intake filters of gas turbines has improved significantly in recent years, due to improvements in the aerodynamics and fluid dynamics of the air-compressor part of the gas turbines.
  17. The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. Viscosity can be conceptualized as quantifying the internal frictional force that arises between adjacent layers of fluid that are in relative motion.
  18. Who has been appointed as the new Chief Executive of Mahindra Electric Mobility Limited (MEML)?
  19. Do you which company was given a 15-year contract in May 2020 to design, produce, and supply 210 regional commuter and transit train cars for Indian railways ?
  20. India's first aerospace-focused SEZ was built by which company?
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