hydrodynamics

I am trying to perform a frequency statistics analysis for a heavy lift vessel with forward speed in Ansys Aqwa using Workbench to calculate the motions and accelerations on cargo and vessel. I have performed for zero speed, got the RAOs in hydrodynamics diffraction and frequency statistics in...

Hi All, I am new to the forum. First of all I want to introduce myself! My name is Andrew and I am a mechanical engineer living in the UK. I grew up with Speed boats and Rhib, but unfortunately, my career has taken me a bit far from that recently! I have read several studies both in...

Does anyone here still have the Godzilla functionality of Michlet up and running? I can't seem to get it working. I can run the main executable mlt933w.exe, but running godzilla.bat just results in a black command prompt popping up briefly and then disappearing. This is using a godzilla file...

Hi Everyone, Fluid Dynamics is a science, and Design is an art. Achieve Designs that outperformed the best known references. Hardcore computations (CFD) and costfull studies are not mandatory, when one merges the intimate understanding of the Fluid Mechanics, together with the constant...

Hi all, Imagine a traditional propeller shaft arrangement on board a vessel, with the vessel moving forward using sail power. If we inverted the propeller or replaced it with one designed to generate rather than propel, what could the maximum efficiency of this 'turbine' be? Initially I was...

Dear All, I am currently facing the task of sizing a twin rudder system for a sailing yacht. My current method has been to heel the boat at an expected heel angle (IE 20°) and establish an ideal value for lead, then size rudder area (projected on the heeled plane) based on said lead. I am...

We are going to focus during the next weeks on developing new calculation templates about keel, rudders, hydrofoils, wingsails, and sails. We are just starting to approach the lattice and panel methods (thank you @tspeer for pointing us out in this direction). Is there anybody familiar with...

Hi everyone, As a freshly graduated Naval Architect, I don't have real-life experience of building high speed boats. However, I had a longstanding question regarding speed estimation of planing hulls, since I was in college. As I could only design hulls in softwares and estimate speeds on them...

Hi guys, I am new in this site. I would like to ask question about the ideas of simulating a stepped hull. like what to do? or what software do i need to use? i have already a 6 months experiences in using CFD but i still have doubts in my skills. please could anyone help me or educate me...

Has anyone seen a foil using bell shaped lift distribution? I have been looking at Al Bowers' prandtl flying wing, for a downwind foiling paddleboard the concept of wing tips producing thrust sounds very interesting.

We are looking for a Hydrodynamic Engineer who wants to sit in Orlando, FL. Must be able to obtain a security clearance (does not need to be active) For immediate response, please send resumes to ccrimmins@apexsystems.com Hydrodynamic Engineer Orlando, FL 32826 Salary/Pay is Flexible DOE...

Hey guys, I currently own a 30 something ft cat but looking at going bigger. I don't want to mention names but I was in comms with a company for a 53ft power cat and they sent me some performance figures which I must admit, made me scratch my head a little bit. Apparently this cat with two...

Dear all I wish to optimise the hull of a traditional Cambridge punt. I can adjust width, bottom curvature (rocker) and the slope of the sides. These factors can vary down the length of the boat. I wish to know how I can optimise hull efficiency it’s a displacement hull travelling at around...

Workday https://rollsroyce.wd3.myworkdayjobs.com/en-US/professional/job/Walpole/Hydrodynamics-Specialist_JR6050964 Hydrodynamics Specialist Walpole, MA As the Hydrodynamics Specialist for Rolls-Royce, you will become a key contributor to a small, but versatile team of engineers responsible for...

Hello everyone, I am currently trying to understand the new design of the curved daggerboards for the the new ClubSwan 125 to be launched in 2019 designed by JuanK Studio. I would really apreciate if someone could share some knowledge or opinion about this curved daggerboards which somehow can...

Hello i'm an undergraduate student in Department of Naval Architecture and Shipbuilding Engineering, Faculty of Marine Technology, Sepuluh Nopember Institute Technology, Surabaya, Indonesia. I wanna ask for more about my final project, the title is "Design of High Speed Passenger Craft (Ferry...