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The paper proposes a study of a GT2 racing car with a computational fluid dynamic (CFD) tool. Results of STAR-CCM+ simulations of the flow around the car in a wind tunnel with movable ground and wheels are presented for different air speeds to assess the different contributions of pressure and shear to lift and drag over the speed range. The rear wing contributes more than 85% of the lift force and 7-8% of the drag force for this particular class of racing cars. When reference is made to the low speed drag and lift coefficients, increasing the speed from 25 to 100 m/s produces an increase of CD of more than 3% and a reduction of CL of more than 2%. The resultsuggests modifying the constant CD and CL values used in lap time simulation toolsintroducing the tabulated values to interpolate vs. the speed of the car.

While some hydrogen (H₂) products are available in the industrial market, new clean H₂ applications are considered critical alternatives in decarbonization efforts. As suppliers need to understand how business customers conceive the value of hydrogen, this paper aims to investigate how the value of hydrogen is described in the published evidence and to identify or propose specific tools to assess its value.

An integrative literature review is developed to synthesize studies on the value of hydrogen to identify the main value categories. Then, the authors create a novel guideline by linking three value dimensions: 1) the product-oriented value (including sustainability), 2) the elements of B2B value and 3) the concept of goal-oriented value.

This paper categorizes the aspects of value discussed so far in the literature, suggesting conceptualizing the value of H₂ value-in-use based on economic, environmental, social and technological categories. The missing value categories from the marketing perspective are related to perceived value. A comprehensive guideline for assessing the value of H₂ for business customers was developed to address that gap. The guideline can evaluate hydrogen from a multicategory perspective and compare new hydrogen products with alternatives.

First, the authors present the value of hydrogen in the B2B marketing discussion. Second, the authors propose four hydrogen value categories based on the current state-of-the-art. Third, the authors developed the multicategory guideline for assessing the value of hydrogen products for business customers (VH₂-BC).