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Friday, November 16, 2018

Fluid Dynamics News

TRAktor 2500-SX Design tug Commences Operations for Svitzer

The third tug built by Sanmar Shipyards to Robert Allan Ltd.’s new TRAktor 2500-SX design commenced operations on November 1st in London for Svitzer. The tug, named the Svitzer Meridian, is the second TRAktor 2500-SX in Svitzer’s fleet and is the third of this new class of tugs to be delivered by Sanmar to international clients in just over 4 months.Above the waterline, this class of tugs feature a raised half foc’sle to provide an enhanced standard of sea-keeping when working in exposed waters.

MAN to Deliver Propulsion for Pasha’s LNG Containerships

Rendering of the new Pasha Hawaii containership (Image courtesy Pasha Hawaii)

MAN Energy Solutions said it has won an order to provide the propulsion systems for two new liquefied natural gas (LNG) fueled containership newbuildings, which will join the fleet of Pasha Hawaii, the U.S. Jones Act carrier in the Hawaii trade lane.Each system will comprise a 7S80ME-GI Mk 9.5 main engine, three MAN 6L35/44DF GenSets and an MAN Alpha FPP propeller system. The 2,525-teu vessels will be constructed at the Keppel AmFELS yard in Brownsville, Texas to Keppel's proprietary design.Bjarne Foldager – Vice President…

San Francisco’s New Fireboat is Like No Other

Image: Jensen Maritime Consultants

San Francisco’s Jensen-designed super pumping fireboat is like none that came before her. As a result, the City by the Bay is prepared like never before, for its next crisis. Christened on October 17, appropriately enough on the anniversary of the 1989 Loma Prieta earthquake, the city of San Francisco’s first new fireboat in almost 60 years is an especially unique boat, designed and built for a specific purpose. When the infamous quake burst the domestic water lines beneath San Francisco…

Hull Vane Retrofit Improves OPV’s Performance

Photo copyright: CMN

CMN Shipyard in Cherbourg, France, conducted sea trials on the June  13, 2018 on the OPV Thémis from the French Coastguard (Affaires Maritimes).The patrol vessel received a hydrodynamic upgrade at the shipyard by retrofitting the patented Hull Vane, an underwater wing which reduces the ship’s resistance. Comparison with the benchmark sea trials – conducted in January in exactly the same conditions – by CMN’s sea trial team showed a reduction in fuel consumption of 18 percent at 12 knots, 27 percent at 15 knots and 22 percent at 20 knots.

Automation for Ship Renewable Energy Systems Unveiled

Photo: Eco Marine Power

As part of the ongoing strategy to prepare its EnergySail and Aquarius MRE for commercial release, Eco Marine Power (EMP) unveiled further details of its automated control and monitoring systems. These will enable EMP’s technologies to integrate with existing ship-based systems. This will facilitate the seamless operation between EMP's renewable energy platforms with other equipment on ships including fuel flow meters.Three marine computer systems jointly developed with KEI System Ltd will be integrated to provide a robust…

DNV GL: First AiP for Scrubber Manufacturer in China

Liu Xiaofeng, Head of Dept. Noise & Vibration, Mechanical & System, DNV GL Maritime Advisory Services Greater China, Jacky Chow, Chief Operating Officer  Shanghai Bluesoul, sign the advisory service contract. Photo DNV GL

DNV GL has awarded the Chinese scrubber manufacturer Shanghai Bluesoul Environmental Technology with an Approval in Principle (AiP) in recognition of the technical feasibility of the BlueSulf scrubber system. The AiP is the first of its kind for a scrubber according to the new DNV GL rule set, and the first for a Chinese scrubber manufacturer. DNV GL will also provide advisory services to Bluesoul, including hardware-in-the-loop testing, simulations using the DNV GL COSMOSS tool and analyses using computational fluid dynamics (CFD).

Ferry Tales: Having a Ferry Good Time

At the most basic level, all new construction projects should offer an improved customer experience. While there are many challenges for designers and builders, complying with the latest ADA accessibility guidelines is a given. Likewise, customers have an elevated level of expectation for improved technology to augment their ride. WiFi, power ports, automated ticketing or counting systems, and onboard information displays are all fast becoming necessities, rather than amenities. (Courtesy: Vigor

Despite of some of the lowest fuel prices experienced in the last eight years, demand for ferry construction is at a seemingly all time high. The focus on building new ferries kicked off in early 2013 and the sustained interest is the continued result of an unleashing of pent up demand. Fleets have been aging and infrastructure needs to be built up in order to accommodate the future demand for commuter ferry travel once fuel prices return to and surpass their once familiar norms.

Global Study into use of Wind, Solar Power on Ships

EnergySail Test Station Photo Eco Marine Power

In co-operation with several shipping companies and technology partners, Eco Marine Power (EMP)has begun a detailed study focused on the practical applications of its patented EnergySail and Aquarius MRE technologies. The study will cover the engineering aspects of installing an EnergySail or Aquarius MRE based solution on a variety of ships and the expected Fuel Oil Consumption (FOC) and CO2 savings that can be achieved in an operational environment. Energy storage options will also be studied including the possible use of fuel cells.

New Tug & Barge Fleet for Louis Dreyfus in Brazil

Image: Robert Allan Ltd.

A new fleet of pusher tugs and barges for Louis Dreyfus Company have recently begun construction in Brazil, all to customized designs from Robert Allan Ltd. of Vancouver, Canada. The vessels will transport bulk grain products on the Amazon River system, with an expected delivery in 2017. During the early phases of design, extensive Computational Fluid Dynamics (CFD) simulations were used to optimize the hull shapes to minimize total convoy resistance. In all cases, the z-drives are fitted in customized tunnels designed to optimize flow and propulsion efficiency while reducing draft.

New ATB Builds for Island Tug & Barge

A worker’s torch cuts metal in the raised forecastle that will house the pin rooms. (Photo: Haig-Brown/Cummins)

Over the years Vancouver, BC based Island Tug and Barge (ITB) has refurbished and repowered older vessels and completed new vessels. The company is currently working on its most ambitious and innovative project to date. In its Annacis Island Shipyard, located undercover in a pair of huge leased warehouses on the Fraser River, ITB is building two tugs that will be paired with two of its existing barges. The two boats are built with pins for use in an articulated tug and barge application.

First of Six New Tugs Delivered to BHP Billiton

Photo: Image: Robert Allan Ltd.

With the arrival of the Iron Kestrel and Iron Corella in Port Hedland, Western Australia, the first two of BHP Billiton Iron Ore's six boat order for Robert Allan Ltd.’s RAstar 85 Class escort tugs have now been delivered by ASL Shipyards Singapore. These modern high performance tugs will escort bulk carriers in and out of Port Hedland. They were custom designed and built to meet the environmental conditions and operational requirements of the world's busiest bulk commodity port by tonnage.

DNV GL Adds Asymmetric Stern To ECO Lines

Computational fluid dynamics (CFD) allows to assess the details of the flow. The colors denote the pressure distribution on the hull. Image: DNV GL

A vessel with an asymmetric stern has a twisted aft shape that is designed to account for the differing flow conditions on each side of the propeller. The idea emerged in the 1960s, but due to the difficulty of manually developing the optimal shape, this design failed to make a large impact at the time. DNV GL has revisited the idea and, using high-fidelity computer fluid dynamics (CFD) in combination with parametric formal optimization, the classification society can now offer ship owners the option of incorporating an asymmetric stern into their new vessels.

Keppel AmFELS to Build Two LNG Fueled Containerships

Image: Keppel Offshore & Marine

Keppel AmFELS, a wholly owned subsidiary of Keppel Offshore & Marine Ltd (Keppel O&M) in the United States (US), has secured a contract worth more than US$400m from Honolulu-based Pasha Hawaii for the construction of two Liquefied Natural Gas (LNG) fueled containerships. The dual fuel LNG vessels will be built to Keppel's proprietary design with delivery of the first vessel expected in 1Q 2020, and the second vessel in 3Q 2020. Simon Lee, President of Keppel AmFELS said, "We are pleased that Pasha has chosen us to build their first two LNG fueled containerships to our innovative design.

Moving Ahead Powerfully

(Photo: MAN Diesel & Turbo)

The layout of ship propellers is a balancing act between optimal power conversion and the avoidance of unwanted cavitation effects, which can result in damage to the propeller structure and higher noise levels. MAN Diesel & Turbo in Frederikshavn, Denmark, is using the computational fluid dynamics (CFD) simulation solution STAR-CCM+ from Siemens PLM Software to model cavitation and optimize ship propellers. Two mid-size container ships of 8,500 TEU – CSCL Europe and CSCL America – will be upgraded by retrofitting a efficient Kappel propeller.

ABS, GasLog Study to Simulate LNG Boil-off

Photo: ABS

ABS, a leading provider of classification and technical services to the marine and offshore industries, and GasLog LNG Services (GasLog) have completed a joint development project demonstrating a new approach to evaluating LNG boil-off rate (BOR). GasLog is an international owner, operator and manager of LNG carriers, providing support to international energy companies as part of their LNG logistics chain. “By expanding the application of computational fluid dynamics (CFD) analysis to simulate the LNG BOR in cargo tanks…

MAN Unveils Its New Flagship Engine

(Photo: MAN Diesel & Turbo)

MAN has revealed the successor to its 48/60CR engine in the company’s 4x line of high-performance diesel engines. The MAN 45/60CR marine diesel engine will initially be available as 12V and 14V versions that boast power outputs, of 15,600 and 18,200 kW respectively, with inline versions following at a later stage. According to Wayne Jones, Chief Sales Officer of MAN Diesel & Turbo, “The new engine combines the best features of the current 48/60CR, such as MAN’s common-rail system with ECOMAP capability…

DNV GL Acquires ComputIT

Are F. Tjønn, CEO, DNV GL - Software (Photo: DNV GL)

DNV GL said it has acquired ComputIT, a specialist independent company for Computational Fluid Dynamics (CFD) software and R&D. ComputIT develops unique high-end technology for simulating fires, explosions and gas dispersion. “This acquisition brings us world-leading capabilities in the CFD domain,” says Are F. Tjønn, CEO, DNV GL - Software. With its roots in the offshore sector, ComputIT has also served onshore oil and gas, power generation, chemical, transport, maritime, and construction industries. It has been engaged by governmental bodies for investigation of fire accidents.

MAN Introduces the 'Game Changer'

(Photo: MAN Diesel & Turbo)

What would Rudolf Diesel say if he could see and compare his engine versus todays’ newest diesel engine development from MAN Diesel & Turbo? As the Augsburg based engine maker claims, “A cylinder output of 1,300 kW this engine puts us to the top.” The largest version of the new engines is a 20-cylinder unit (20V45/60) comes with a limit-pushing power output of 26 MW. The new MAN 45/60CR range is a striking combination of top performance, operational flexibility and reliability.

Damen Presents ‘Gone With the Wind'

Image: Damen Shipyards Group

Marco Bovio, Senior Research Hydromechanics Engineer at Damen, presented details of internal research Computational Fluid Dynamics (CFD) based project ‘Gone With The Wind’ (GWTW). For the past two years Damen has been conducting a review of CFD technology and its applications in the maritime industry, and GWTW has been addressing one specific aspect of this. Its purpose, to look at the capability of CFD to accurately model the aerodynamic forces that act upon vessels above the waterline, as a separate analysis to those CFD studies that focus on the interactions that occur below the surface.

Royal IHC, Jan de Nul Seal Dredge Pumps Seal

Royal IHC seals dredge pumps deal with Jan De Nul Group Photo courtesy IHC

Royal IHC has been awarded a contract for the delivery of dredge pumps by Luxembourgbased Jan De Nul Group. The agreement incorporates two onboard double-walled dredge pumps for the company’s new 18,000m3 trailing suction hopper dredger (TSHD), as well as onboard single-walled dredge pumps for two other 6,000m3 TSHDs. “We are delighted that we have secured another order from Jan De Nul Group,” says Dave Vander Heyde, CEO of Royal IHC. IHC’s decades of experience in designing pumps…

World’s First Full Scale Numerical Modelling Workshop

Ship scale CFD simulation made with StarCCM+ code (Photo: Lloyd's Register)

Lloyd’s Register (LR) hosted the world’s first workshop on full scale hydrodynamic computer simulations at their Global Technology Center in Southampton last month. Ship designers from around the world came together with the aim of building confidence in the accuracy of ship scale Computational Fluid Dynamics (CFD) modelling within the marine sector. This is the first time that the industry has openly compared full scale CFD with comprehensive measurements. Through comparisons of blind simulation results submitted by participants…

Great Ships of 2016: Sunray

(Photo: SungDong)

Since it started publishing in 1939, Maritime Reporter & Engineering News has recognized excellence in ship construction. Builder: SungDong Shipbuilding & Marine Engineering Co., Ltd. Owner: Tsakos Energy Navigation Ltd. Sunray is the first vessel in a series of two LR I Product oil Carrier, built by SungDong Shipbuilding & Marine Engineering for Tsakos Energy Navigation Ltd. The vessel is built under the survey of Duel Class (ABS and KR) and designed in accordance with IACS Common Structure Rule.

Great Ships of 2016: Milos

(Photo: SungDong)

Since it started publishing in 1939, Maritime Reporter & Engineering News has recognized excellence in ship construction. Milos is the first vessel in a series of two Suezmax Crude Oil Tanker, built by SungDong Shipbuilding & Marine Engineering for Kyklades Maritime Corporation. The vessel is built under the survey of Lloyd’s Register and designed in accordance with IACS Common Structure Rule(CSR). The vessel features a double side skin and has a flush deck, bulbous bow, transom stern, open water type stern frame, semi-balanced rudder and single propeller driven by a slow speed diesel engine.

Maritime Reporter Magazine Cover Oct 2018 - Marine Design Annual

Maritime Reporter and Engineering News’ first edition was published in New York City in 1883 and became our flagship publication in 1939. It is the world’s largest audited circulation magazine serving the global maritime industry, delivering more insightful editorial and news to more industry decision makers than any other source.

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