Mastering fluid flow to enhance user experience|

Mastering fluid flow to enhance user experience

Ice cream and blood are two things you probably don’t want to think about simultaneously. But both are full of organic proteins and fats and behave differently from a fluid like water when they’re pumped through tubes. Innovators sometimes think about these similarities when creating, for example, a novel ice cream dispenser or device that filters out platelets from donor blood .

How a substance flows is a vitally important consideration for many products, from foods to skincare to medical devices to household paints. Development teams need to keep in mind a wide range of flow behaviors (for example, flow through nozzles, non-Newtonian flow, and foaming) to hit the sweet spot: a positive user experience that makes a product stand out in a crowded market. This means thinking about the science of how liquids and gases behave (fluid dynamics), as well as how the product responds to user interaction.

Look at how the squeezable plastic ketchup bottle differs from the glass bottles that were standard before 1983. The new design completely changed the user experience – no more digging down into the bottle with a knife to get the ketchup flowing again. Things became even easier for ketchup lovers with the debut of the upside-down squeezable bottle – no more awkwardly storing ‘regular’ bottles upside down in the fridge.

Or think about how the experience of washing your hands changed after the arrival of the liquid soap dispenser. Instead of having to share the same bar of soap with others, people can now wash “without the soapy mess”, as Robert R Taylor, who introduced SoftSoap liquid soap, put it, and can take only as much soap as they need.

While the flow of some liquids is analogous to water, whose behavior is well understood, other substances behave in much more complicated ways, requiring in-depth analysis work to understand when designing new products. For example, the air bubbles in ice cream make it behave as a liquid foam. Ice cream’s flow will change depending on how you’re dispensing it: Push it at high pressure through a narrow channel or nozzle, and the air bubbles will be compressed, allowing more ice cream to flow through the nozzle at once. When the ice cream is returned to normal pressure, the air bubbles re-expand, and the ice cream returns to its original size. Because of this complex and variable behavior, designing a product to dispense ice cream relies on hands-on experiments… which can mean going through gallons of ice cream before you can create a design that works as intended. Only by conducting these experiments to understand ice cream’s behavior can you build the mathematical model required to effectively develop a high-performance machine.

While it’s a shame to use gallons of ice cream in the quest for a better product, it’s not an environmental disaster. But shipping water-based products around the world does contribute to fossil fuel consumption and climate change. Removing water from laundry detergent helps cut shipping emissions by reducing bulk and making shipping more efficient. But it also dramatically changes how detergent flows and gets used by consumers. For example, measuring out 10 ml more detergent than recommended likely wouldn’t have an impact if you’re using a product that’s mostly water. But being off by 10 ml when detergent is concentrated could make a big difference for your laundry. So, it’s vital to ensure that dispensing is accurate, which requires an understanding of flow.

There are so many flow behaviors that can affect a product’s design. For example, should a container for insecticide include a mechanism to avoid skin contact and spillage? How could a medical device for freezing tumors be redesigned to eliminate vapor locks without the use of heavy and bulky high-pressure gas cylinders? Is there a way to dispense foaming hand soap in a decorative pattern for a premium experience?

Getting the design right for a flowing substance can differentiate between a product that fails and one that creates an experience that shifts category norms and delivers breakthrough consumer delight.


References

WHITE PAPER

Impediments to tobacco harm reduction in LMICs:

The ENDS adoption journey

BY NICKI SUTTON, BEN KELSEY & GEORGE BOSTOCK
Whitepaper_Impediments-to-tobacco-harm-reduction-in-LMICs_cover

“We were able to define an ENDS Adoption Journey which outlines seven steps a smoker must take to substitute combustible tobacco products with ENDS.”

Tobacco consumption has, for decades, represented a global pandemic. Over 1.3 billion people, or 16% of the world’s population, use tobacco in one of its many forms, grouped into combustible or smokeless types. 80% of these users reside in low and middle-income countries (LMICs) where tobacco use contributes to increased morbidity and mortality directly and indirectly, via poverty.

The Foundation for a Smoke-Free World (FSFW) has a goal to advance progress in smoking cessation and tobacco harm reduction (THR) with a particular focus on LMICs. To better understand some of the challenges faced in these markets, FSFW commissioned us to identify the barriers or impediments to adoption of electronic nicotine delivery systems (ENDS) in LMIC countries.

Download our whitepaper to discover the seven steps a smoker must take to substitute combustible tobacco products with ENDS.

Whitepaper_Impediments-to-tobacco-harm-reduction-in-LMICs_page-spread
The 2016 National Health Interview Survey

Combining treatments to better manage pain

The 2016 National Health Interview Survey of 17,000 Americans reports that 1 in 5 people suffer chronic pain1. Significant effort and money are being invested by companies ranging from large Pharma to small Tech start-ups to address this “pain epidemic” as evidenced in the clinicaltrials.gov database showing over 2,500 “pain” trials which are actively recruiting. Some of the more interesting studies are looking at the benefits of combining pharmacological and non-pharmacological approaches to pain management, reflecting a growing recognition within the medical community that a multi-modal approach can often offer a range of significant patient benefits.

While the body of clinical evidence supporting a multimodal approach grows, we have to recognise that many people who suffer from pain already mix-and-match different therapies to meet their individual needs. Moreover, they are talking about their experiences and treatments, sharing advice and influencing each other through the many on-line blogs and forums dedicated to chronic pain. After spending a few hours surfing through these resources it’s clear that a large proportion of sufferers still have unmet pain needs and they are unafraid to try different, often non-pharmacologic, solutions in addition to their medications. These non-pharmacological treatments are varied and can include Transcutaneous Electrical Nerve Stimulation (TENS), Movement Therapy, Massage Therapy, Virtual Reality Assisted Distraction, Mindfulness and Suggestion Techniques, Cognitive Behavioural Therapy, and Acupuncture.

In fact, the most powerful insight is that people don’t expect there to be a single product or treatment which will address everyone’s pain (though that would be nice). Instead, they are looking for a range of options that are tailored for their specific needs which include social and emotional elements, not just functional pain reduction. For example, time, money, ease of use, on-demand access, drug-free, stigma-free, and building pain treatment into their health and wellness routines are all important elements that pain sufferers are looking to address.

This leads to an interesting question we should ask ourselves… “how can the medical community and companies help each pain sufferer along their treatment journey to identify the right combination of pain treatments that meet their specific set of needs – and adjust depending on changes in their circumstances?”

The answer probably lies at the intersection of current Consumer and Healthcare trends. People are wanting to take more responsibility and control of their Health and Wellness status and are prepared to use technology to achieve this goal.

The scientists at Cambridge Design Partnership have deep consumer experience in this sector as well as proven technical capabilities to:

  • monitor people and their behaviours with wearable technology and instrumented devices,
  • capture and analyse this data to create useful insights,
  • use machine learning to draw out further insights and make recommendations and
  • implement complementary techniques like Biofeedback, to reinforce therapies.

This toolkit enables us to create new and exciting products and services to better help pain sufferers optimise their individual treatment regimens – what to use and when to use it. Remember, pain sufferers are already experimenting to find the best multimodal regime for themselves – we can help them take the next step.

For more information about our capabilities in Consumer Healthcare, please contact Graham Myatt at hello@cambridge-design.com

1. James Dahlhamer et al, “Prevalence of Chronic Pain and High-Impact Chronic Pain Among Adults
United States, 2016”, Weekly / September 14, 2018 / 7(36);1001–1006.