The Jamin effect, as a resistance arising from the morphological changes of droplets during two-phases flow in capillary tube, plays crucial role enhancing oil recovery efficiency (EOR) petroleum engineering. In present study, we investigate critical parameters effect sloped tube laden with water and sodium dodecyl sulfate (SDS) solutions, including velocity pressure difference. pinning behavior droplet is observed waterflood lower velocity, while depinning rupturing occur at higher...

With the rapid development of origami technology, worm-inspired robots have attracted tremendous interest owing to their colourful locomotion behaviours, such as creeping, rolling, climbing and obstacle crossing. In present study, we aim engineer a robot based on knitting process with paper, which could realize complicated functions associated large deformation exquisite patterns. At first fabricate backbone by using paper-knitting technique. The experiment shows that can endure significant...

Particle rafts are a new kind of soft matter formed by self-organization on the interface, which possesses mechanical properties between fluid and solid, they have been widely used in many industrial fields. In present study, compression experiment circular particle raft is first performed, where an SDS (sodium dodecyl sulfate)-coated metal ring placed around its periphery. When surfactant diffuses, shrinks, shrinkage ratio increases with increase concentration, experimental results...

In the present study, morphology evolution of a particle raft with preprepared crack, which is caused by injecting surfactant sodium dodecyl sulfate (SDS) into water, demonstrated. Experimental results on process crack closure and configuration are captured in excellent agreement numerical simulations. Then surface diffusion model SDS proposed to quantify detailed physical scenario. The factor determined through shooting method based experimental result dynamic tension. As result, analytical...

Abstract Soft magnetic robots have attracted tremendous interest owning to their controllability and manoeuvrability, demonstrating great prospects in a number of industrial areas. However, further explorations on the locomotion corresponding deformation with complex configurations are still challenging. In present study, we analyse series soft various geometric shapes under action field. First, prepared matrix material for robot, that is, mixture silicone particles. Next, fabricated...

With the rapid development of origami technologies, worm-inspired robots have attracted a great deal attention due to their flexible locomotion characteristics. In present work, we prepared soft robot inspired by worms, which can achieve various patterns under actuation magnetic field. First, technique is used form backbone robot, and two NdFeB discs are adhered on its ends. Next, experiments for controlling Omega motion rolling performed, mechanical analyses given. experiments, speed reach...

Carbon dioxide (CO2) fracturing is a powerful strategy for enhancement of oil recovery by creating more fractures in the formation so that it can efficiently improve flow conditions oils and gases underground. In present study, we explore whole process crack propagation injecting CO2 molecules into based on molecular dynamics simulation. For I-type rock sample, details are demonstrated, accompanied damage near tip. Next, fracture toughness calculated according to critical intensity factor...

Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Solid Earth. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Prediction anisotropic effective moduli shales based on Mori-Tanaka model digital core techniqueAuthorsZidongWangiDGongqiCaoJianlinLiuiDLi-YunFuSee all authors...

Abstract Natural rocks belong to the polymineral composite material with complex microstructures. Such a strong heterogeneity of makes it difficult estimate effective moduli by traditional models in theory. In present study, Mori-Tanaka (MT) model considering shape and orientation inclusion minerals obtained micro-CT is established, then applied evaluate anisotropic parameters shales. MT model, principal radii Eulerian angles ellipsoidal are solving its inertia matrix through micro-CT....