Expert photo

Thomas Lloyd

Specialist, Noise and Vibrations

Ships

Send Thomas Lloyd a message

Expertise areas
Publications
Paper
On the accuracy of partially averaged Navier–Stokes resolution estimates

Dec 1, 2019

Partially Averaged Navier–Stokes computations can employ three different approaches for specifying the ratio of modelled-to-total turbulence kinetic ...
Paper
Calibration of flush-mounted hydrophones using various signal types

Oct 9, 2019

Measurements of cavitation-induced underwater radiated noise (URN) are carried out on a regular basis in MARIN’s Depressurised Wave Basin (DWB). The ...
Paper
Noise measurements of a cavitating propeller in different facilities: results of the round-robin test programme

Oct 9, 2019

Mitigation of shipping noise is a topical issue in marine engineering because of the dramatic increase in the levels of anthropogenic underwater ...
Paper
Acoustic modelling of a propeller subject to non-uniform inflow

May 26, 2019

Understanding radiated noise from marine propellers is of interest from the point of view of mitigating sound pollution and avoiding detection. At ...
Paper
Pans simulations: low versus high Reynolds number approach

May 13, 2019

Different approaches for specifying the ratio of modelled-to-total dissipation (fε) in the PANS model, based on the k−ω SST model, are evaluated for ...
Paper
A sensitivity analysis of CFD transition modelling in the context of vortex roll-up prediction

May 13, 2019

A sensitivity analysis of the transitional flow over a NACA662−415 foil and the elliptical Arndt wing is carried out. The SST turbulence model is ...
Magazine
Supporting silent ships: measuring underwater radiated noise from cavitating ship propellers

Aug 17, 2017

Reading time 6 minutes

Have you ever had problems talking to someone in a noisy environment such as a busy restaurant? The same happens to marine animals, which use sound ...
Paper
Computational fluid dynamics prediction of marine propeller cavitation including solution verification

Jun 12, 2017

This paper analyses the effect of grid refinement on computational fluid dynamics simulations of cavitating propeller flow.
Paper
Numerical Study Of Cavitation On A NACA0015 Hydrofoil: Solution Verification

May 15, 2017

The present paper analyses a series of Computational Fluid Dynamic simulationsof the cavitating flow around a two-dimensional NACA0015 foil.
Paper
Improved Modelling Of Sheet Cavitation Dynamics On Delft Twistll Hydrofoil

May 15, 2017

In this paper, unsteady viscous-flow cavitation predictions for a 3D hydrofoil are performedusing three different approaches: 1) a pure RANS method; ...
Paper
Influence of grid setup on the prediction of hydrofoil cavitation

Oct 3, 2016

The objective of this work is to evaluate the effect of two different grid types when they are used to simulate cavitating flow using an unsteady ...
Paper
Towards cavitation modelling accounting for transition effects

Oct 3, 2016

In this paper, we present a preliminary investigation into how application of a transition model influences the flow prediction for a cavitating ...
Paper
Comparison of uRANS and BEM-BEM for propeller pressure pulse prediction: E779A propeller in a cavitation tunnel

Oct 3, 2016

This work is a deeper investigation of the wetted and cavitating flow around the INSEAN E779A propeller in a cavitation tunnel as studied within the ...
Paper
Using the FW-H equation for hydroacoustics of propellers

Sep 28, 2015

In this paper we detail a study into appropriate use of the FW-H acoustic analogy for making hydroacoustic predictions of marine propellers.
Paper
The Potsdam propeller test case in oblique flow: prediction of cavitation patterns and pressure pulses

Jun 4, 2015

We report computations performed as part of the Second International Workshop on Cavitating Propeller Performance, using the Potsdam Propeller Test ...
Paper
Marine propeller acoustic modelling: comparing CFD results with an acoustic analogy method

May 31, 2015

Propeller noise and vibration is important in the design of ships in order to improve comfort, reduce signature or mitigate environmental impact. ...
Paper
Implementing The Ffowcs Williams-Hawkings Acoustic Analogy Into A Viscous CFD Solver

Sep 30, 2014

This paper details the verification of an FW-H equation implementation within the CFD code, ReFRESCO, as well as comparing results obtained with ...

Other experts

Rogier EggersSenior Project Manager
Patrick HooijmansSenior Project Manager Ships
Gerco HagesteijnSenior Project Manager Ships
Enrico Della ValentinaSenior Project Manager Ships
Tom van TerwisgaTeam leader Resistance and Propulsion
Joost SchotProject Manager
Rien de MeijSenior Project Manager Ships
Arjan LampeSpecialist CFD
Bart SchuilingResearcher
Michiel VerhulstSpecialist Analysis & Prediction
John HuismanProject Manager
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping
Johan BosschersSenior Researcher
GertJan ZondervanSenior Project Manager Ships
Klaas KooikerSenior Project Manager
Erik RotteveelProject Manager
Jesse SlotProject Manager Ships
Frans Hendrik LafeberTeam Leader Ships
Jaap van HeerdSenior Project Manager Ships
Martijn van RijsbergenSenior Researcher
Guilhem GaillardeManager Ships
Milo BirvalskiProject Manager
Gijs StruijkHead of On Board Specialists
Auke van der PloegCFD Researcher
Thijs HasselaarSenior Project Manager
Arie de JagerSenior Project Manager
Karola van der MeijTeam Leader Cruise & Ferry
Geerhard JanseProject Engineer
Bram StarkeCFD Researcher
Rene HulshofTeam Leader Ships
Artur LidtkeResearcher
Joost MoulijnSenior Researcher
Frans QuadvliegSenior Project Manager Ships
Menno A Deijvan RijswijkResearcher
Patrick HooijmansSenior Project Manager Ships
Enrico Della ValentinaSenior Project Manager Ships
Klaas SlagerSpecialist CFD
Arjan LampeSpecialist CFD
Bart SchuilingResearcher
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping
Klaas KooikerSenior Project Manager
Erik RotteveelProject Manager
Frederick JaouenSenior Project Manager
Joop HelderSenior Project Manager
Serge ToxopeusTeam leader CFD development / Senior Researcher
Guilhem GaillardeManager Ships
Auke van der PloegCFD Researcher
Tim BunnikSenior Researcher
Chris WillemsenProject Manager Ships
Arie de JagerSenior Project Manager
Patrick SchrijversProject Manager
Karola van der MeijTeam Leader Cruise & Ferry
Guido OudResearcher
Bram StarkeCFD Researcher
Stephane RapucResearcher
Artur LidtkeResearcher
Pepijn de JongSenior Project Manager / Team Leader Navy
Frans QuadvliegSenior Project Manager Ships
Klaas SlagerSpecialist CFD
Thomas ScholczResearcher
Arjan LampeSpecialist CFD
Michiel GunsingSenior Project Manager
John HuismanProject Manager
Egbert YpmaSenior Researcher / Teamleader
Roderik VogelsProject Manager
Hans CozijnSenior Project Manager
Remco HagemanProject Manager
Guilhem GaillardeManager Ships
Frans KremerDefence Programme Manager
Chris WillemsenProject Manager Ships
Nicolas CaretteSenior Project Manager Ships
Geerhard JanseProject Engineer
Frans van WalreeSenior Project Manager Ships
Stephane RapucResearcher
Enrico Della ValentinaSenior Project Manager Ships
Jaap van HeerdSenior Project Manager Ships
Frans QuadvliegSenior Project Manager Ships
Klaas SlagerSpecialist CFD
Rien de MeijSenior Project Manager Ships
Henk van den BoomSenior Project Manager
Arjan LampeSpecialist CFD
Michiel GunsingSenior Project Manager
Jesse SlotProject Manager Ships
Frans Hendrik LafeberTeam Leader Ships
Guilhem GaillardeManager Ships
Gijs StruijkHead of On Board Specialists
Anton KisjesProject Manager
Christian LenaSenior Project Manager
Karola van der MeijTeam Leader Cruise & Ferry
Geerhard JanseProject Engineer
Riaan van t VeerSenior Project Manager
Francisco Miguel MonteroSenior Project Manager
Stephane RapucResearcher
Patrick HooijmansSenior Project Manager Ships
Rob GrinSenior Project Manager Ships
Frans QuadvliegSenior Project Manager Ships
Rogier EggersSenior Project Manager
Gerco HagesteijnSenior Project Manager Ships
Klaas SlagerSpecialist CFD
Joost SchotProject Manager
Hans HuismanSenior Human Factors Specialist
Thomas ScholczResearcher
Henk van den BoomSenior Project Manager
Arjan LampeSpecialist CFD
Michiel GunsingSenior Project Manager
John HuismanProject Manager
Egbert YpmaSenior Researcher / Teamleader
Erik RotteveelProject Manager
Henk PrinsManager
Wytze de BoerSenior Project Manager Ships
Moritz KrijgsmanSenior Project Manager
Guilhem GaillardeManager Ships
Gijs StruijkHead of On Board Specialists
Thijs HasselaarSenior Project Manager
Arie de JagerSenior Project Manager
Karola van der MeijTeam Leader Cruise & Ferry
Antoine BedosProject Manager
Geerhard JanseProject Engineer
Stephane RapucResearcher
Artur LidtkeResearcher
Frans QuadvliegSenior Project Manager Ships
Gerrit van der WantSenior Project Manager
Wendie UitterhoeveSpecialist Human Factors
Egbert YpmaSenior Researcher / Teamleader
Henk PrinsManager
Wytze de BoerSenior Project Manager Ships
Guilhem GaillardeManager Ships
Thijs HasselaarSenior Project Manager
Riaan van t VeerSenior Project Manager
ErikJan de RidderSenior Project Manager/Teamleider
Verena SchaapProject Manager
Ilmas BayatiProject Manager
Floor SpaargarenProject Manager
Henk van den BoomSenior Project Manager
Egbert YpmaSenior Researcher / Teamleader
Joop HelderSenior Project Manager
Anand AshokProject Manager
Bruno RossinProject Manager
Guilhem GaillardeManager Ships
Tim BunnikSenior Researcher
Patrick SchrijversProject Manager
William OttoSenior Project Manager
Reinier BergevoetTeamleider/Project Engineer Modeltest
Linda KempProject Manager
Artur LidtkeResearcher
Tom van TerwisgaTeam leader Resistance and Propulsion
Ilmas BayatiProject Manager
Levent KaydihanSpecialist HSS
John HuismanProject Manager
Johan BosschersSenior Researcher
Frans Hendrik LafeberTeam Leader Ships
Guilhem GaillardeManager Ships
Gijs StruijkHead of On Board Specialists
Geerhard JanseProject Engineer
Frans QuadvliegSenior Project Manager Ships
Rogier EggersSenior Project Manager
Timo F VerwoestHead of Digital Services
Menno A Deijvan RijswijkResearcher
Olaf WaalsManager
Patrick HooijmansSenior Project Manager Ships
Gerco HagesteijnSenior Project Manager Ships
Arno BonsSenior Project Manager
Johan DekkerProject Manager
Enrico Della ValentinaSenior Project Manager Ships
Klaas SlagerSpecialist CFD
Joost SchotProject Manager
Verena SchaapProject Manager
Floor SpaargarenProject Manager
Rien de MeijSenior Project Manager Ships
Thomas ScholczResearcher
Henk van den BoomSenior Project Manager
Arjan LampeSpecialist CFD
Bart SchuilingResearcher
Michiel GunsingSenior Project Manager
JorritJan SerrarisSenior Project Manager
Rink HallmannSenior Project Manager Ships
John HuismanProject Manager
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping
Johan BosschersSenior Researcher
GertJan ZondervanSenior Project Manager Ships
Klaas KooikerSenior Project Manager
Erik RotteveelProject Manager
Jesse SlotProject Manager Ships
Roderik VogelsProject Manager
Hans CozijnSenior Project Manager
Remco HagemanProject Manager
Frederick JaouenSenior Project Manager
Jaap van HeerdSenior Project Manager Ships
Joop HelderSenior Project Manager
Anand AshokProject Manager
Serge ToxopeusTeam leader CFD development / Senior Researcher
Guilhem GaillardeManager Ships
Auke van der PloegCFD Researcher
Anton KisjesProject Manager
Tim BunnikSenior Researcher
Chris WillemsenProject Manager Ships
Arie de JagerSenior Project Manager
Christian LenaSenior Project Manager
Jaap de WildeSenior Project Manager
Patrick SchrijversProject Manager
Nicolas CaretteSenior Project Manager Ships
Karola van der MeijTeam Leader Cruise & Ferry
Antoine BedosProject Manager
Guido OudResearcher
Bram StarkeCFD Researcher
Frans van WalreeSenior Project Manager Ships
Linda KempProject Manager
Martin van der WelProject Manager
Francisco Miguel MonteroSenior Project Manager
Stephane RapucResearcher
Marta IbarrondoProject Manager
Artur LidtkeResearcher
Joost MoulijnSenior Researcher
Frans QuadvliegSenior Project Manager Ships
Rogier EggersSenior Project Manager
Olaf WaalsManager
Patrick HooijmansSenior Project Manager Ships
Gerco HagesteijnSenior Project Manager Ships
Enrico Della ValentinaSenior Project Manager Ships
ErikJan de RidderSenior Project Manager/Teamleider
Ilmas BayatiProject Manager
Floor SpaargarenProject Manager
Rien de MeijSenior Project Manager Ships
Henk van den BoomSenior Project Manager
Michiel GunsingSenior Project Manager
Michiel VerhulstSpecialist Analysis & Prediction
JorritJan SerrarisSenior Project Manager
Rink HallmannSenior Project Manager Ships
Christian VeldhuisTeam Leader Ships - Simulation & Development | Senior Project Manager | Research coordinator Zero Emission Shipping
Johan BosschersSenior Researcher
Egbert YpmaSenior Researcher / Teamleader
GertJan ZondervanSenior Project Manager Ships
Klaas KooikerSenior Project Manager
Erik RotteveelProject Manager
Frans Hendrik LafeberTeam Leader Ships
Roderik VogelsProject Manager
Hans CozijnSenior Project Manager
Frederick JaouenSenior Project Manager
Jaap van HeerdSenior Project Manager Ships
Joop HelderSenior Project Manager
Jule ScharnkeSenior Project Manager
Anand AshokProject Manager
Bruno RossinProject Manager
Martijn van RijsbergenSenior Researcher
Guilhem GaillardeManager Ships
Milo BirvalskiProject Manager
Anton KisjesProject Manager
Arie de JagerSenior Project Manager
Christian LenaSenior Project Manager
Jaap de WildeSenior Project Manager
Nicolas CaretteSenior Project Manager Ships
Karola van der MeijTeam Leader Cruise & Ferry
Antoine BedosProject Manager
Jan TukkerResearcher
Yvette KlinkenbergSpecialist
Rene BosmanResearcher
Reinier BergevoetTeamleider/Project Engineer Modeltest
Frans van WalreeSenior Project Manager Ships
Riaan van t VeerSenior Project Manager
Linda KempProject Manager
Francisco Miguel MonteroSenior Project Manager
Stephane RapucResearcher
Rene HulshofTeam Leader Ships
Joost MoulijnSenior Researcher