Concept- and FEED Studies

Having performed countless monopile concept- and FEED-studies for business cases and bids we understand the importance of getting things right from the beginning. As a result, we do not compromise on the accuracy of our engineering models and methods but apply the same approach in the early phases of a project as we would for a detailed design. This means that a concept monopile designed by our experts will differ less from the final foundation giving our clients higher certainty on their business cases. As part of concept and FEED studies we:

Screen foundation geometries to find the best solution
Use high fidelity engineering methods
Support our clients by high-lighting focus areas for achieving low-cost foundations
Deliverables:
ESTIMATED PILE DIMENSIONS
SENSITIVTY STUDY
FEED STUDY
CONCEPT STUDY

Monopile Foundation Design

Venfluc has an unmatched track record when it comes to designing and optimising monopile foundations for offshore wind turbines. We automate and standardise design processes to produce designs that are cost-effective and reliable. Furthermore, we incorporate state-of-the-art engineering practises like soil reaction curves from the Pile Soil Analysis (PISA) project into our designs. At Venfluc we:

Carry out detailed design of foundations.
Optimise the foundation design for each wind turbine position in the wind farm.
Tailor the foundations to the desired fabrication contractor.
Deliverables:
DETAILED DESIGN
DESIGN REPORT
DRAWINGS
DESIGN BRIEF
DESIGN BASIS
OWNERS ENGINEER
MATERIAL TAKE OFF (MTO)

Fabrication

Handling and storage of wind turbine towers and monopile foundations during fabrication becomes a progressively challenging and delicate task as tower and foundation diameters increase. Every step of the process at the fabrication site must be carefully analysed to avoid unintended plastic deformation and maintain structural integrity.

At Venfluc, we pride ourselves on our skills in the verification of handling and storage scenarios. Using in-depth finite element analysis (FEA), we provide:

 

Verification of structural integrity for the fabrication phases
Updated foundation and tower design to match the fabrication setup
Design or modifications of fabrication tools and equipment to match requirements of increased tower and foundation sizes
Determine a manufacturers size and weight limits for foundation fabrication based on equipment
Deliverables:
DETAILED DESIGN REPORT
SENSITIVTY STUDies
TECHNICAL NOTE
DETAILED ANALYSES IN ANSYS
DETAILED DRAWINGS IN AUTOCAD, 3D RENDERING ETC.
LINEAR AND NON-LINEAR FEA
Design of sand berms
Design of cradles for storage and spmt

Transport and Installation

At Venfluc, our expertise lies in the structural integrity assessments of wind turbine towers and monopile foundations throughout their installation and transport phases. Utilising detailed finite element analyses and adhering to industry-leading standards, our verifications encompass:

Loading and unloading from vessel
Offshore transport of foundations and towers - ULS & FLS
Deck lifting and on-vessel specfic handling 
Upending of foundations and towers
Pile gripper and flange upending tool interaction 
Driveability studies
Dynamic 3d finite element pile driving analysis
Optimisation of handling tools and sea fastening cradles
Dynamic lowering of monopile 
Operability analysis of monopile lowering operation
Deliverables:
detailed DESIGN REPORT
SENSITIVTY STUDies
TECHNICAL NOTE
Operability matrix for transport and installation
Detailed analyses in ansys and orcaflex
Detailed drawings in autocad, 3d rendering etc.
LINEAR AND NON-LINEAR FEA

Finite Element Analysis

In the pursuit of cost-effective and reliable designs, the offshore wind industry is progressively leaning on the capabilities of advanced finite element analysis. At Venfluc, we stand at the forefront with our industry-leading expertise in conducting finite element analyses for offshore wind turbine -and substation support structures. Not only do we excel in model precision, but we also harness automation for parametric studies, optimising structures to drive down costs.

Primary steel structures
Secondary steel structures
Flange connections
Stress concentration factors pertaining to secondary steel, holes and details
Optimization of structures through parametric studies
3d analysis of the complete structure embedded in soil. Serves as validation of the design and shows further optimisation possibilities.
Deliverables:
DETAILED DESIGN
Front end engineering design
conceptual design
detail or product OPTIMIZATION
Design verifications

Integrated Load Analysis

Arguably the most critical aspect of a successful offshore wind turbine foundation design is the integrated load analysis (ILA), where the loads and the design are resolved. Typically, the loads are determined by the wind turbine manufacturer, whereas the foundation design is conducted by a consultant. This split could potentially lead to sub-optimised structures if not handled properly.

At Venfluc we have industry-leading experience in both designing foundations and managing the integrated load analysis process. We ensure that the process runs smoothly, and that undesirable sub-optimisation is avoided leading to significant cost reductions for our clients. In short, we:

Manage the design-load iterations
Apply an integrated approach to the design of the support structure
Ensure that foundation cost is kept at a minimum
Deliverables:
INTEGRATED LOAD ANALYSIS
OPTIMIZED SUPPORT STRUCTURE DESIGN
Teknikerbyen 5, 2nd floor
2830 Virum
Denmark
info@venfluc.com
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