A journey to unique PIV measurements at ship scale. Episode 1.

MARIN recently performed unique PIV flow measurements at ship scale within the JoRes project. This achievement has a 5 years’ journey to reflect on. So, where did it start?

A journey to unique PIV measurements at ship scale. Episode 1.

It may sound surprising, but in the 21st century humanity knows a lot about space and the universe, but there is almost no data on water flowing into the propeller of an ordinary ship. All the knowledge available currently is either based on model test experiments (with seriously challenged assumptions) or on yet-to-be validated numerical simulations. Up until now, there was no reliable and accurate instrument to measure the flow around a vessel. How are we then supposed to optimise the ship hull and propulsion system if we do not know the details of the flow?

With this question in mind, a group of researchers at MARIN sat together in 2017 and started to think about how to tackle this challenge. If no one has done this before, it does not mean it is impossible!

To be continued…

Mitsubishi Shipbuilding joins JoRes project

We are thrilled to announce that the famous Mitsubishi Shipbuilding Co., Ltd (part of Mitsubishi Heavy Industry group) has just joined our JoRes Joint Research initiative. With more than 40 participants on board (including shipyards, class societies, research institutes, propeller designers, CFD practitioners etc) we are aiming to develop an industry recognised benchmark for ship scale CFD and energy efficiency solutions.

Very warm welcome, Mitsubishi!

Another hull roughness assessment of our twin-screw vessel

What hull roughness value do you use when you run a CFD simulation of a vessel in ship scale?

At the JoRes project, we use the actual measured values for our vessels! A year ago JoRes team visited a dry-dock to measure hull roughness in 145 locations for our twin-screw vessel. This year we repeated the measurements at the same locations, so we will have a great opportunity to see how roughness changed over time! 

JoRes team at the dry-dock

JoRes project at COP26

The UN Climate change conference COP26 provided a great opportunity to discuss the challenges of maritime industry decarbonisation. It was highlighted that ship energy efficiency should play an important role to achieve the 2050 targets. It is great to see the key stakeholders of the maritime industry coming together, speaking the same language and discussing practical steps forward! 

IMO Secretary-General Mr Kitack Lim and JoRes project manager Mr Dmitriy Ponkratov